Un-framed version or Framed version Mirror sites: (Main page) (thistlethwaites mirror)

All active SN
over mag 17.0
NameMagType
ASASSN-15hx13.1Ia
J0717414.0Ia
ASASSN-15hf14.8Ia
2015F15.1Ia
ASASSN-14lp15.3*Ia
J0909315.4LBV
J1749215.6IIP
ASASSN-15fj15.6*Ia
ASASSN-15ga15.6*Ia-91bg
ASASSN-15jp15.6unk
J1300315.7Ia-91T
ASASSN-15hy15.7Ia-pec
J1505316.2Ia-91bg
J1628316.3Ia-91bg
J1602516.3Ia
ASASSN-15ih16.3Ia
ASASSN-15ja16.3unk
PS15ahs16.4Ia
ASASSN-15jo16.4unk
ASASSN-15hc16.4Ia
ASASSN-15ic16.4Ia
ASASSN-15il16.5Ia
ASASSN-15gw16.5*Ia-91bg
ASASSN-15fr16.5*Ia-91T
ASASSN-15go16.5*Ia
ASASSN-15hs16.6IIn
ASASSN-15ir16.6II
M0746116.6Ia
ASASSN-15hh16.6Ia
C0416016.6*unk
M2239116.7*unk
LSQ15adm16.7Ia-csm
ASASSN-15ho16.7Ia
J1352216.8IIn
ASASSN-15ik16.8IIn
ASASSN-15js16.8unk
ASASSN-15hg16.8Ia
ASASSN-15fy16.9*Ia
J1235016.9*Ia-91T
J1049116.9*IIP
ASASSN-15jg16.9Ia

* - last observation is over one month old.  

A long time ago, in a galaxy far far away, a star exploded.   This star exploded so violently that for a few weeks the star outshone its parent galaxy.   This type of explosion is called a Supernova.   The last one in our galaxy was 400 years ago, making us about 300 years overdue for the next one.   On this web page you will find a list of the currently observable supernovae, along with information on their location, reference images, and their last reported brightness.   The data on this page comes from CBET and ATEL circulars.   Data also comes from IAU's Transient Objects Confirmation page and List of Recent Supernovae web page.   These web pages have brought you the latest in supernovae data and images since April 1997.   18 years and counting.

.   For yesterday's updates, go to the updates page.

News: PSN J09093496+3307204 is an LBV in NGC 2770 which appears to be evolving into a Type II.   Big problems with http://www.RochesterAstronomy.org/snimages. Be sure to do a "refresh" or remove your cashe if you do not see recent data.   Please check the mirror site: http://www.supernova.thistlethwaites.com/snimages/.   Please see Padova-Asiago Supernova Group for the latest spectra.   A new paper throws some cold water on the Type Ia standard candle theory, making accurate light curves of these objects even more important (article).   For the year 2015, 1295 supernovae (8 CBAT, 62 unconfirmed, and 1225 other sources) have been reported. (1956 last year)   The brightest SN of the year is 2015F (Mag 12.9).

New features: This CSV file has all of the statistics I have gathered in one file. The Active supernovae page is a version of this page which is designed to be easier to read.   I've done extensive work recently in the Archives.   If anybody knows who some of the "unknown" discoverers are, please let me know.   Does anybody know of a grant that I could apply to for supporting this page? I probably spend about 2 hours a night working on it.   Please note my backup e-mail address: dbishopx at gmail.com .  To turn off the icons, use this link.   I am (re)starting a supernova e-mail list.   Please sign up if interested.   VSNet is partially back up!   LOSS ask people who discover supernovae to provide an offset from a nearby star to make spectroscopy easier.  

Nova M31 2015-05b? (= PNV J00431911+4116082), CBAT TOCP discovered 2015/05/22.046 by Kamil Hornoch et al.
Found in M31 at R.A. = 00h43m19s.11, Decl. = +41°16'08".2
Located 392" east and 0" south of the center of M31
Mag 17.7:5/22, Type unknown

ASASSN-15jt, ATEL 7551 discovered 2015/05/22.340 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 13h08m09s.13, Decl. = +27°49'34".9
Located 0".3 east and 0".9 south of the center of the host galaxy (Discovery image)
Mag 17.1:5/22, Type unknown

ASASSN-15js, ATEL 7548 discovered 2015/05/21.210 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in 2MFGC 8437 at R.A. = 10h50m38s.35, Decl. = +12°17'49".2
Located 0".8 east and 2".9 north of the center of 2MFGC 8437 (Discovery image)
Mag 16.8:5/21, Type unknown

ASASSN-15jp, ATEL 7546 discovered 2015/05/21.080 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 3157 at R.A. = 10h11m38s.99, Decl. = -31°39'04".0
Located 43".9 west and 29".7 south of the center of NGC 3157 (Discovery image)
Mag 15.6:5/21, Type unknown

PSN J12204403+1650448, CBAT TOCP discovered 2015/05/12.650 by THU-NAOC Transient Survey (TNTS)
Found in an anonymous galaxy at R.A. = 12h20m44s.03, Decl. = +16°50'44".8
Located 1" west and 1" north of the center of the host galaxy (Discovery image)
Mag 18.5:5/12, Type unknown

ASASSN-15jo, ATEL 7540 discovered 2015/05/20.140 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 14h06m44s.67, Decl. = -34°27'17".4
Located 1".3 east and 0".9 north of the center of the host galaxy (Discovery image)
Mag 16.4:5/20, Type unknown

PSN J12354440+1605376, CBAT TOCP discovered 2015/05/12.650 by THU-NAOC Transient Survey (TNTS)
Found in an anonymous galaxy at R.A. = 12h35m44s.40, Decl. = +16°05'37".6
Located 3" east and 2" north of the center of the host galaxy (Discovery image)
Mag 18.4:5/12, Type AGN (References: SN PSN J12354442+1606366)

ASASSN-15jm, ATEL 7536 discovered 2015/05/19.410 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 17h21m09s.19, Decl. = +25°34'55".5
Located 0" east and 0" north of the center of the host galaxy (Discovery image)
Mag 17.1:5/19, Type Ia (z=0.05) (offset 1.3) (References: ATEL 7550)

PSN J16025128+4713292, CBAT TOCP discovered 2015/05/19.701 by Zhangwei Jin and Xing Gao
Found in UGC 10156 at R.A. = 16h02m51s.28, Decl. = +47°13'29".2
Located 15".7 east and 3".3 north of the center of UGC 10156 (Discovery image) (Maurice Gavin image)
Mag 16.3:5/21, Type Ia (References: ATEL 7544)

PSN J14485091+1228550 (= SNhunt288), CBAT TOCP discovered 2015/05/19.330 by Catalina Real-Time Transient Survey
Found in an anonymous galaxy at R.A. = 14h48m50s.91, Decl. = +12°28'55".0 (near NGC 5762)
Located 0" east and 0" north of the center of the host galaxy (Discovery image)
Mag 19.7:5/19, Type unknown

ASASSN-15jl, ATEL 7527 discovered 2015/05/13.390 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 15h22m41s.12, Decl. = +50°58'35".4
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 17.2:5/13, Type Ia (offset 1.0) (z=0.034746) (References: ATEL 7535)

MASTER OT J111357.37-465849.1, ATEL 7525 discovered 2015/05/17.857 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 11h13m57s.37, Decl. = -46°58'49".1
Located 0" east and 25".5 north of the center of the host galaxy (Discovery image)
Mag 17.5:5/17, Type unknown

ASASSN-15ji, ATEL 7522 discovered 2015/05/17.380 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 536-G8 at R.A. = 23h35m14s.36, Decl. = -22°44'24".1
Located 0" east and 0" north of the center of ESO 536-G8 (Discovery image) (Joseph Brimacombe image)
Mag 17.2:5/17, Type unknown (offset 13.5)

ASASSN-15jg, ATEL 7518 discovered 2015/05/15.150 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 10h46m55s.64, Decl. = -02°19'29".9
Located 0" east and 0" north of the center of the host galaxy (Discovery image)
Mag 16.9:5/18, Type Ia (z=0.036) (offset 4) (References: ATEL 7519)

ASASSN-15jf, ATEL 7518 discovered 2015/05/12.400 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 22h25m11s.08, Decl. = -50°23'47".5
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 17.0:5/17 (16.5:5/12), Type unknown (offset 1.6)

PSN J16283836+3932552, CBAT TOCP discovered 2015/05/15.271 by R. Gagliano, D. Post, Jack Newton, and Tim Puckett
Found in NGC 6166 at R.A. = 16h28m38s.36, Decl. = +39°32'55".2
Located 1".5 east and 8".6 south of the center of NGC 6166 (Discovery image) (J. Camarasa image) (Paolo Campaner image) (Gianluca Masi image) (Andre Mantero image) (Manfred Mrotzek image) (Juanjo Gonzalez image)
Mag 16.3:5/20, Type Ia-91bg (z=0.03) (References: ATEL 7528, ATEL 7533; SN 2009eu)

ASASSN-15jb, ATEL 7507 discovered 2015/05/13.370 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 11h20m06s.40, Decl. = +34°07'43".0
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Gianpiero Locatelli image)
Mag 17.7:5/17 (17.2:5/13), Type Ia (z=0.03566) (References: ATEL 7510, 7511, 7512)

MASTER OT J174008.23+374114.0, ATEL 7505 discovered 2015/05/13.748 by MASTER robotic Net
Found in CGCG 199-6 at R.A. = 17h40m08s.23, Decl. = +37°41'14".0 (= CGCG 1738.4+3742)
Located 19".8 east and 7".3 north of the center of CGCG 199-6 (Discovery image) (Juan-Luis Glez. Carballo image)
Mag 17.7:5/13, Type unknown

PSN J13003230+2758411 (= KISS15n), CBAT TOCP discovered 2015/05/13.520 by Koichi Itagaki
Found in an anonymous galaxy at R.A. = 13h00m32s.30, Decl. = +27°58'41".1
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Zhijian Xu, Xing Gao image prediscovery) (Andrea Mantero image) (Nick James image) (Seiichiro Kiyota image) (Gianluca Masi image) (J. Camarasa image) (Masanori Mizutani image) (CRTS image) (Paolo Corelli image)
Mag 15.66:5/21, Type Ia-91T (z=0.023) (References: ATEL 7528, ATEL 7529, ATEL 7532; SN PSN J13004114+2759518)

ASASSN-15ja, ATEL 7502 discovered 2015/05/13.430 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 113-G18 at R.A. = 01h09m39s.03, Decl. = -61°19'58".3
Located 0" east and 0" north of the center of ESO 113-G18 (Discovery image)
Mag 16.3:5/13, Type unknown (offset 1.5)

PSN J18285823+2254106, CBAT TOCP discovered 2015/05/12.042 by Fabio Briganti (ISSP)
Found in NGC 6641 at R.A. = 18h28m58s.23, Decl. = +22°54'10".6
Located 8" east and 3" south of the center of NGC 6641 (Discovery image) (Massimo Caimmi image) (Joseph Brimacombe image) (Gianluca Masi image) (Paolo Campaner image)
Mag 17.1:5/16 (16.3:5/12), Type IIb (z=0.014) (References: ATEL 7519)

ASASSN-15ir, ATEL 7493 discovered 2015/05/08.020 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 569-G9 at R.A. = 10h48m30s.30, Decl. = -21°38'07".9
Located 12".1 east and 3".0 south of the center of ESO 569-G9 (Discovery image) (Joseph Brimacombe image)
Mag 16.6:5/11, Type II (z=0.012) (References: ATEL 7519)

ASASSN-15il, ATEL 7491 discovered 2015/05/11.310 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 15h57m08s.15, Decl. = -12°40'23".9
Located 0".5 east and 1".7 north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 16.5:5/11, Type Ia (References: ATEL 7497)

ASASSN-15ik, ATEL 7491 discovered 2015/05/11.240 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 11h02m04s.75, Decl. = +03°30'02".7
Located 1".4 west and 0".4 south of the center of the host galaxy (Discovery image) (Gianpiero Locatelli image)
Mag 16.8:5/12 (16.6:5/11), Type IIn (z=0.0348) (References: ATEL 7497, ATEL 7531)

PSN J12333187+2747007, CBAT TOCP discovered 2015/05/08.650 by THU-NAOC Transient Survey (TNTS)
Found in KUG 1231+280 at R.A. = 12h33m31s.87, Decl. = +27°47'00".7
Located 1" east and 3" north of the center of KUG 1231+280 (Discovery image) (Joseph Brimacombe image unconfirmed)
Mag 19.4:5/8, Type unknown

ASASSN-15ih, ATEL 7483 discovered 2015/05/04.090 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h59m59s.57, Decl. = -02°53'16".4
Located 1".2 west and 8".3 north of the center of the host galaxy (Discovery image) (Seiichiro Kiyota image) (Andrea Mantero image) (Gianpiero Locatelli image) (Joseph Brimacombe image) (William Wiethoff image) (JM Llapasset image) (Stan Howerton image)
Mag 16.3:5/12 (16.0:5/11), Type Ia (z=0.019827) (References: ATEL 7531)

PS15ahs, ATEL 7471 discovered 2015/05/02.523 by PS1 Science consortium
Found in MCG +7-37-11 at R.A. = 17h59m29s.77, Decl. = +43°23'24".2
Located 0" east and 0" north of the center of MCG +7-37-11 (Discovery image) (Joseph Brimacombe image) (Masanori Mizutani image) (Andrea Mantero image) (Jordi Camarasa image)
Mag 16.4:5/17 (15.9:5/9), Type Ia (offset 6.71) (z=0.031) (References: ATEL 7477)

PSN J07174570+2320406, CBAT TOCP discovered 2015/05/02.482 by T. Noguchi
Found in NGC 2357 at R.A. = 07h17m45s.70, Decl. = +23°20'40".6
Located 66" east and 43" south of the center of NGC 2357 (Discovery image) (Gianluca Masi image) (Andrea Mantero image) (Gianluca Masi image) (Masanori Mizutani image) (Joseph Brimacombe image) (Giancarlo Cortini image) (Kunihiro Shima image) (Gianpiero Locatelli image) (Roberto De Lorenzo image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (Manfred Mrotzek image) (JM Llapasset image) (Masanori Mizutani image) (Bill Williams image) (Stan Howerton image) (Paolo Campaner image) (Stan Howerton image) (Iko Margalef image) (Stan Howerton image) (Paolo Corelli image)
Mag 14.0:5/19, Type Ia (z=0.007589) (References: ATEL 7476; SN 2010bj)

LSQ15alq ATEL 7465 discovered 2015/04/29 by La Silla-QUEST at R.A. = 13h09m18s.56, Decl. = -25°52'20".24 Mag 99.9:4/29, Type Ia (z=0.047)

ASASSN-15id, ATEL 7461 discovered 2015/04/29.280 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 19h38m30s.11, Decl. = -79°25'51".9
Located 13".0 west and 26".7 north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (Joseph Brimacombe image)
Mag 17.0:5/2 (16.0:4/29), Type unknown

PSN J19435637+4758301, CBAT TOCP discovered 2015/04/28.398 by R. Gagiano, D. Post, Jack Newton, and Tim Puckett
Found in UGC 11469 at R.A. = 19h43m56s.37, Decl. = +47°58'30".1
Located 8".5 east and 18".8 south of the center of UGC 11469 (Discovery image) (Gianluca Masi image) (Joseph Brimacombe image)
Mag 18.8:5/7 (17.9:4/28), Type unknown

ASASSN-15ic, ATEL 7455 discovered 2015/04/27.000 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 06h14m51s.38, Decl. = -42°47'56".0
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 16.4:4/28, Type Ia (z=0.025) (offset 29) (References: ATEL 7458)

LSQ15aja ATEL 7452 discovered 2015/04/24 by La Silla-QUEST at R.A. = 17h03m08s.91, Decl. = +12°27'41".6 Mag 19.0:04/24, Type Ia (z=0.068)

MASTER OT J074610.09-712224.9, ATEL 7451 discovered 2015/04/26.752 by MASTER robotic Net
Found in PGC 269232 at R.A. = 07h46m10s.09, Decl. = -71°22'24".9
Located 1".4 east and 14".9 north of the center of PGC 269232 (Discovery image) (Joseph Brimacombe image)
Mag 16.6:4/29 (16.3:4/26), Type Ia (z=0.019) (References: ATEL 7458)

ASASSN-15hz, ATEL 7450 discovered 2015/04/26.380 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 22h29m38s.08, Decl. = -65°27'56".2
Located 1".4 east and 3".3 south of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (Roland Santallo image)
Mag 17.1:5/13 (16.7:4/28), Type Ia (z=0.033) (References: ATEL 7458)

ASASSN-15hy, ATEL 7450 discovered 2015/04/25.210 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 20h10m02s.35, Decl. = -00°44'21".3
Located 11".2 west and 6".3 north of the center of the host galaxy (Discovery image) (Marc Deldem image)
Mag 15.7:5/8, Type Ia-pec (z=0.025) (References: ATEL 7452)

ASASSN-15hx, ATEL 7447 discovered 2015/04/26.180 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 13h43m16s.69, Decl. = -31°33'21".5
Located 0" east and 0" north of the center of the host galaxy (Discovery image)
Mag 13.1:5/11, Type Ia (offset 4) (References: ATEL 7452)

PSN J12060084+2036183 (= SNhunt287), CBAT TOCP discovered 2015/04/25.190 by Catalina Real-Time Transient Survey and Stan Howerton
Found in NGC 4098 at R.A. = 12h06m00s.84, Decl. = +20°36'18".3
Located 43" west and 4" south of the center of NGC 4098 (Discovery image) (Stan Howerton image) (Joseph Brimacombe image) (William Wiethoff image) (Andrea Mantero image) (Gianluca Masi image) (Stan Howerton image)
Mag 18.7:5/11 (18.0:5/7), Type unknown

PSN J23355226+2336521 (= Gaia15aer), CBAT TOCP discovered 2015/04/25.786 by Koichi Itagaki
Found in NGC 7712 at R.A. = 23h35m52s.26, Decl. = +23°36'52".1
Located 8" east and 15" south of the center of NGC 7712 (Discovery image) (T. Noguchi image) (Kunihiro Shima image) (Joseph Brimacombe image) (Gianluca Masi image)
Mag 17.0:5/4 (16.1:4/26), Type Ic (z=0.010184) (References: ATEL 7456, ATEL 7467)

ASASSN-15hs, ATEL 7444 discovered 2015/04/24.180 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 15h33m34s.31, Decl. = -78°07'23".5
Located 2".2 east and 1".7 north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 16.6:4/24, Type IIn (z=0.009) (References: ATEL 7458)

PS15afa, ATEL 7442 discovered 2015/04/23.304 by PS1 Science consortium
Found in NGC 3404 at R.A. = 10h50m18s.15, Decl. = -12°06'28".1
Located 0" east and 0" north of the center of NGC 3404 (Discovery image) (Joseph Brimacombe image)
Mag 17.4:4/23, Type II (z=0.015) (z=0.015364) (offset 4.15) (References: ATEL 7452; SN 2008bt)

PSN J13145290+3442128 (= CSS150423:131453+344213), CBAT TOCP discovered 2015/04/23.320 by Catalina Real-Time Transient Survey
Found in MCG +6-29-66 at R.A. = 13h14m52s.90, Decl. = +34°42'12".8
Located 22" west and 4" north of the center of MCG +6-29-66 (Discovery image) (Andrea Mantero image) (Joseph Brimacombe image) (Kunihiro Shima image) (Masanori Mizutani image) (PS1 image) (Paolo Corelli image)
Mag 19.2:5/16 (17.5:4/23), Type Ia (z=0.052850) (References: ATEL 7476)

PS15aez ATEL 7437 discovered 2015/04/22.262 by PS1 Science consortium at R.A. = 11h00m09s.77, Decl. = +05°33'48".5 Mag 17.69, Type Ia (z=0.056) (offset 1.5) (Discovery image) (References: ATEL 7440)

ASASSN-15ho, ATEL 7426 discovered 2015/04/19.060 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h09m23s.89, Decl. = -04°43'30".10
Located 7".1 east and 3".3 south of the center of the host galaxy (Discovery image) (Gianpiero Locatelli image) (Gregor Krannich image) (Joseph Brimacombe image)
Mag 16.7:4/21, Type Ia (z=0.0460) (References: ATEL 7432)

MASTER OT J163343.30+294131.6 (= CSS150507:163343+294131), ATEL 7424 discovered 2015/04/20.718 by MASTER robotic Net at R.A. = 16h33m43s.30, Decl. = +29°41'31".6 Mag 18.65:5/7, Type unknown (Discovery image) (CRTS image)

ASASSN-15hh, ATEL 7419 discovered 2015/04/20.020 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 2115A at R.A. = 05h51m18s.69, Decl. = -50°35'09".8
Located 10".8 west and 11".5 south of the center of NGC 2115A (Discovery image) (Joseph Brimacombe image) (Joseph Brimacombe image) (Roland Santallo image)
Mag 16.6:4/22 (16.3:4/20), Type Ia (z=0.023389) (References: ATEL 7422 ATEL 7443)

LSQ15abm ATEL 7415 discovered 2015/04/01 by La Silla-QUEST at R.A. = 11h37m35s.11, Decl. = -07°11'05".1 Mag 18.7:04/01, Type Ia (z=0.091) (Joseph Brimacombe image)

MASTER OT J122915.24+815214.3, ATEL 7414 discovered 2015/04/17.828 by MASTER robotic Net
Found in UGC 7624 at R.A. = 12h29m15s.24, Decl. = +81°52'14".3
Located 10".3 east and 3".7 north of the center of UGC 7624 (Discovery image) (Masanori Mizutani image) (Kunihiro Shima image)
Mag 20.0:4/21 (18.5:4/17), Type unknown

ASASSN-15hg, ATEL 7413 discovered 2015/04/19.330 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in CGCG 63-98 at R.A. = 09h53m48s.62, Decl. = +09°11'37".8
Located 9".1 west and 0".2 north of the center of CGCG 63-98 (Discovery image) (Gianpiero Locatelli image) (Joseph Brimacombe image)
Mag 16.8:4/22, Type Ia (z=0.029771) (References: ATEL 7420, ATEL 7421)

LSQ15abl ATEL 7412 discovered 2015/03/19 by La Silla-QUEST at R.A. = 09h40m29s.50, Decl. = -04°11'32".3 Mag 17.9:03/19, Type SLSN-II (z=0.087) (References: ATEL 7439)

MASTER OT J223910.79+341826.0, ATEL 7410 discovered 2015/04/17.049 by MASTER robotic Net at R.A. = 22h39m10s.79, Decl. = +34°18'26".0 Mag 16.7:4/17, Type unknown (offset 8.2) (Discovery image)

ASASSN-15hf, ATEL 7406 discovered 2015/04/17.050 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 375-G41 at R.A. = 10h29m30s.76, Decl. = -35°15'35".2
Located 2".9 west and 0".3 north of the center of ESO 375-G41 (Discovery image) (Joseph Brimacombe image)
Mag 14.8:5/11 (14.2:5/3), Type Ia (z=0.005) (References: ATEL 7412)

ASASSN-15he, ATEL 7400 discovered 2015/04/12.340 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 69-G5 at R.A. = 16h31m33s.50, Decl. = -67°52'04".2
Located 10".4 west and 0".4 north of the center of ESO 69-G5 (Discovery image) (Joseph Brimacombe image) (Roland Santallo image)
Mag 17.0:5/13 (16.6:4/12), Type Ia (z=0.014) (References: ATEL 7412)

ASASSN-15hc (= PS15adf), ATEL 7398 discovered 2015/04/14.292 by All Sky Automated Survey for SuperNovae (ASAS-SN); PS1 SN page
Found in an anonymous galaxy at R.A. = 10h24m38s.82, Decl. = -02°59'07".8
Located 5".1 west and 0".3 south of the center of the host galaxy (Discovery image) (PS1 image) (Seiichiro Kiyota image) (Joseph Brimacombe image) (Kunihiro Shima image) (Gianpiero Locatelli image)
Mag 16.4:4/22, Type Ia (z=0.031) (References: ATEL 7405, ATEL 7411)

PSN J16501647+2334449 (= SNhunt286), CBAT TOCP discovered 2015/04/14.480 by Catalina Real-Time Transient Survey and Stan Howerton
Found in NGC 6233 at R.A. = 16h50m16s.47, Decl. = +23°34'44".9
Located 11" east and 3" south of the center of NGC 6233 (Discovery image) (Joseph Brimacombe image) (Stan Howerton image) (Stan Howerton image) (Kunihiro Shima image) (Stan Howerton image) (Stan Howerton image)
Mag 20.7:5/11 (17.5:4/17), Type unknown (Stan Howerton light curve)

PSN J12054713+2025026, CBAT TOCP discovered 2015/04/13.055 by Tim Puckett
Found in PGC 1626773 at R.A. = 12h05m47s.13, Decl. = +20°25'02".6
Located 1" east and 8" south of the center of PGC 1626773 (Gianluca Masi image) (Gianpiero Locatelli image) (William Wiethoff image) (Joseph Brimacombe image) (Kunihiro Shima image) (Andre Mantero image) (TNTS image) (Stan Howerton image)
Mag 19.6:4/25 (18.5:4/13), Type unknown

ASASSN-15gz (= PS15afe), ATEL 7385 discovered 2015/04/13.310 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 14h42m32s.14, Decl. = -13°27'36".6
Located 6".7 west and 7" south of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (PS1 image)
Mag 17.1:4/23 (16.7:4/20), Type Ia (References: ATEL 7401)

ASASSN-15gw, ATEL 7370 discovered 2015/04/10.540 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 5536 at R.A. = 14h16m23s.97, Decl. = +39°30'09".0
Located 1".3 east and 1".1 north of the center of NGC 5536 (Discovery image) (Joseph Brimacombe image) (Gregor Krannich image) (Kunihiro Shima image) (Jordi Camarasa image)
Mag 16.5:4/10, Type Ia-91bg (References: ATEL 7405)

PSN J09023787+2556042 (= Gaia15aet), ATEL 7366 discovered 2015/04/11.184 by Lick Observatory Supernova Search
Found in NGC 2735 at R.A. = 09h02m37s.87, Decl. = +25°56'04".2
Located 10" west and 0" south of the center of NGC 2735 (Discovery image) (Giancarlo Cortini prediscovery image) (Giancarlo Cortini image) (Jaroslaw Grzegorzek prediscovery image) (Gianpiero Locatelli image) (Andrea Mantero image) (Manfred Mrotzek image) (JM Llapasset image) (Kunihiro Shima image) (Marco Russiani image)
Mag 17.0:4/26 (15.9:4/18), Type IIb (z=0.008) (References: ATEL 7368, CBAT TOCP)

PSN J13443367+0446535, CBAT TOCP discovered 2015/04/09.890 by F. Ciabattari, E. Mazzoni and S. Donati (ISSP)
Found in UGC 8690 at R.A. = 13h44m33s.67, Decl. = +04°46'53".5
Located 5" west and 22" north of the center of UGC 8690 (Discovery image) (Gianpiero Locatelli image) (Paolo Campaner image) (Andrea Mantero image) (Massimo Caimmi image) (Fabio Briganti image) (Paolo Campaner image)
Mag 18.6:4/19 (17.8:4/9), Type II (References: ATEL 7372; SN 2005G)

ASASSN-15gr, ATEL 7360 discovered 2015/04/09.050 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 266-G15 at R.A. = 06h45m20s.58, Decl. = -34°53'38".1
Located 11".8 west and 14".8 south of the center of ESO 266-G15 (Discovery image) (Seiichiro Kiyota image) (Roland Santallo image)
Mag 17.5:5/17 (15.9:4/22), Type Ia (z=0.024) (References: ATEL 7363)

MASTER OT J125459.84-442516.5, ATEL 7359 discovered 2015/03/16.002 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 12h54m59s.84, Decl. = -44°25'16".5
Located 0" east and 0" north of the center of the host galaxy (Discovery image)
Mag 17.3:3/16, Type unknown (offset 29.5)

MASTER OT J062210.50-542849.8, ATEL 7357 discovered 2015/04/08.825 by MASTER robotic Net
Found in PGC 148751 at R.A. = 06h22m10s.50, Decl. = -54°28'49".8
Located 10".4 west and 2".8 north of the center of PGC 148751 (Discovery image)
Mag 17.8:4/8, Type unknown

MASTER OT J061701.22-475148.0, ATEL 7356 discovered 2015/04/08.815 by MASTER robotic Net
Found in ESO 205-5 at R.A. = 06h17m01s.22, Decl. = -47°51'48".0
Located 24" east and 1".4 south of the center of ESO 205-5 (Discovery image)
Mag 17.8:4/8, Type unknown

PSN J08564998+5307380, CBAT TOCP discovered 2015/04/07.500 by THU-NAOC Transient Survey (TNTS) at R.A. = 08h56m49s.98, Decl. = +53°07'38".0 Mag 19.7:4/7, Type unknown (offset 4E 1S) (Discovery image)

ASASSN-15go, ATEL 7349 discovered 2015/04/06.050 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 06h11m30s.50, Decl. = -16°29'03".5
Located 0".2 west and 5".0 north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (Joseph Bromacombe image (color version))
Mag 16.5:4/19 (15.8:4/9), Type Ia (z=0.019) (References: ATEL 7368, ATEL 7375)

ASASSN-15fy, ATEL 7348 discovered 2015/03/29.380 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 19h50m22s.34, Decl. = -14°17'45".10
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 16.9:3/29, Type Ia (z=0.025) (offset 3SW) (References: ATEL 7354)

MASTER OT J172624.20+335044.4, ATEL 7346 discovered 2015/04/01.974 by MASTER robotic Net at R.A. = 17h26m24s.20, Decl. = +33°50'44".4 Mag 17.6:4/1, Type unknown (Discovery image)

PSN J17492705+3608360, ATEL 7345 discovered 2015/04/04.516 by Lick Observatory Supernova Search
Found in UGC 11000 at R.A. = 17h49m27s.05, Decl. = +36°08'36".0
Located 5" east and 7" south of the center of UGC 11000 (Discovery image) (JM Llapasset image) (Masanori Mizutani image) (Kunihiro Shima image) (Maurice Gavin image)
Mag 15.6:5/21 (15.1:4/15), Type IIP (z=0.004566) (References: ATEL 7347, ATEL 7353, CBAT TOCP)

PS15yv PS1 SN page discovered 2015/04/01.382 by PS1 Science consortium at R.A. = 13h44m42s.10, Decl. = +18°00'17".5 Mag 19.9:4/1 (19.8:4/1), Type unknown (offset 3.7) (Discovery image)

PSN J13332289+5843315 (= Gaia15ael) (= CSS150325:133323+584331), CBAT TOCP discovered 2015/03/25 by Catalina Real-Time Transient Survey; S. Maticic
Found in an anonymous galaxy at R.A. = 13h33m22s.89, Decl. = +58°43'31".5
Located 27" west and 11" north of the center of the host galaxy (Discovery image) (S. Maticic image) (Joseph Brimacombe image) (Gianpiero Locatelli image) (William Wiethoff image) (Masanori Mizutan image) (Esteban Aguilar image)
Mag 17.9:4/17 (16.9:4/7), Type Ia (z=0.030) (References: ATEL 7403)

PS15yl (= Gaia15afa), ATEL 7336 discovered 2015/03/31.000 by PS1 Science consortium
Found in an anonymous galaxy at R.A. = 13h20m23s.74, Decl. = +21°18'25".5
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (William Wiethoff image) (Masanori Mizutani image)
Mag 18.9:5/13 (17.7:3/31), Type unknown (offset 5.58) (z=0.038842)

PSN J11571789+3624544 (= SNhunt285), CBAT TOCP discovered 2015/03/30.210 by Catalina Real-Time Transient Survey
Found in UGC 6929 at R.A. = 11h57m17s.89, Decl. = +36°24'54".4
Located 22" west and 3" south of the center of UGC 6929 (Discovery image) (Stan Howerton image) (Stan Howerton image) (William Wiethoff image) (Stan Howerton image) (Stan Howerton image)
Mag 18.6:4/25 (18.2:4/10), Type unknown

LSQ15aae ATEL 8325 discovered 2015/03/30 by La Silla-QUEST at R.A. = 16h30m15s.70, Decl. = +05°55'58".73 Mag 99.9:3/30, Type Ia-91T (z=0.05)

ASASSN-15fz (= PSN J13352514+0124305) (= PS15adi), ATEL 7320 discovered 2015/03/30.570 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 5227 at R.A. = 13h35m25s.14, Decl. = +01°24'33".0
Located 9".3 east and 8" south of the center of NGC 5227 (Discovery image) (Andrea Mantero image) (Joseph Brimacombe image) (Gianpiero Locatelli image) (Jaroslaw Grzegorzek image) (Masanori Mizutani image) (PS1 image) (Paolo Campaner image) (Kunihiro Shima image) (M. Caimmi image) (K. Itagaki image) (Esteban Aguilar image) (Paolo Corelli image)
Mag 17.1:4/19 (16.9:3/30), Type II (z=0.017479) (Padova-Asiago spectrum) (References: ATEL 7323, CBAT TOCP)

ASASSN-15ga, ATEL 7317 discovered 2015/03/30.290 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 4866 at R.A. = 12h59m27s.29, Decl. = +14°10'15".8
Located 2".4 east and 0" north of the center of NGC 4866 (Discovery image) (Joseph Brimacombe image)
Mag 15.6:3/30, Type Ia-91bg (z=0.0066) (References: ATEL 7333)

MASTER OT J060117.49-254844.2, ATEL 7307 discovered 2015/03/28.815 by MASTER robotic Net
Found in PGC 774805 at R.A. = 06h01m17s.49, Decl. = -25°48'44".2
Located 7".5 east and 8".1 south of the center of PGC 774805 (Discovery image) (Joseph Brimacombe image)
Mag 18.2:3/28, Type unknown

PSN J12261594+0830407 (= PS15ts)

PSN J13315145+3000276, CBAT TOCP discovered 2015/03/25.750 by THU-NAOC Transient Survey (TNTS) at R.A. = 13h31m51s.45, Decl. = +30°00'27".6 Mag 18.6:3/25, Type unknown (offset 2W 1N) (Discovery image)

PSN J13402316+2824385 (= CSS150326:134023+282439), CBAT TOCP discovered 2015/03/25.750 by THU-NAOC Transient Survey (TNTS) at R.A. = 13h40m23s.16, Decl. = +28°24'38".5 Mag 18.23:3/26 (17.7:3/25), Type unknown (offset 0E 1S) (Discovery image) (CRTS image)

ASASSN-15fs (= PS15aij), ATEL 7296 discovered 2015/03/25.560 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in CGCG 229-10 at R.A. = 18h58m40s.82, Decl. = +43°28'07".9
Located 0" east and 0" north of the center of CGCG 229-10 (Discovery image) (Joseph Brimacombe image) (PS1 image)
Mag 18.4:5/17 (16.6:3/25), Type Ia (z=0.02902) (offset 2.5) (References: ATEL 7306)

PS15uj, ATEL 7295 discovered 2015/03/25.386 by PS1 Science consortium
Found in an anonymous galaxy at R.A. = 10h19m21s.35, Decl. = -22°08'37".6
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 17.0:3/29, Type unknown (z=0.01214) (offset 3.16)

MASTER OT J204313.96-321110.3, ATEL 7294 discovered 2015/03/07.145 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 20h43m13s.96, Decl. = -32°11'10".3
Located 1".8 west and 4".5 south of the center of the host galaxy (Discovery image)
Mag 16.8:3/7, Type unknown

PSN J09325977+2957036 (= SNhunt283), CBAT TOCP discovered 2015/03/24.110 by Catalina Real-Time Transient Survey and Stan Howerton
Found in an anonymous galaxy at R.A. = 09h32m59s.77, Decl. = +29°57'03".6
Located 1" east and 1" north of the center of the host galaxy (Discovery image) (William Wiethoff image)
Mag 18.8:3/24, Type unknown

ASASSN-15fr, ATEL 7281 discovered 2015/03/24.350 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h20m20s.44, Decl. = -07°38'26".8
Located 0".2 west and 3".6 south of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (Joseph Brimacombe image)
Mag 16.5:3/25 (16.4:3/24), Type Ia-91T (z=0.033436) (References: ATEL 7305, ATEL 7308)

2015G (= PSN J20372558+6607115), CBET 4087 discovered 2015/03/23.788 by Kunihiro Shima
Found in NGC 6951 at R.A. = 20h37m25s.58, Decl. = +66°07'11".5
Located 68".7 east and 51".4 north of the center of NGC 6951 (Discovery image) (Denis Buczynski image) (Kunihiro Shima image) (Masanori Mizutani image) (Andrea Mantero image) (T. Noguchi image) (S. Kiyota image) (T. Yusa image) (Andy Cason image) (Andy Cason image) (Gianluca Masi image) (Kunihiro Shima image) (Markus BŁtikofer image)
Mag 17.9:4/17 (15.5:3/23), Type Ibn (References: ATEL 7298, CBAT TOCP; SN 2000E, 1999el)

PS15rs, ATEL 7274 discovered 2015/03/21.570 by PS1 Science consortium at R.A. = 16h14m01s.35, Decl. = -18°03'32".8 Mag 17.30, Type Ia (z=0.029) (Discovery image) (References: ATEL 7308)

MASTER OT J132723.53+674411.9, ATEL 7273 discovered 2015/03/22.748 by MASTER robotic Net at R.A. = 13h27m23s.53, Decl. = +67°44'11".9 Mag 19.3:3/22, Type unknown (Discovery image)

SMTJ13455799-3532544 ATEL 7271 discovered 2015/03/18 by SkyMapper at R.A. = 13h45m57s.99, Decl. = -35°32'54".4 Mag 20.13:03/18, Type unknown

MASTER OT J131847.92+672030.3, ATEL 7270 discovered 2015/03/22.740 by MASTER robotic Net at R.A. = 13h18m47s.92, Decl. = +67°20'30".3 Mag 18.4:3/22, Type unknown (Discovery image)

PSN J12160519+2640588 (= SNhunt282), CBAT TOCP discovered 2015/03/20.350 by Catalina Real-Time Transient Survey and Stan Howerton at R.A. = 12h16m05s.19, Decl. = +26°40'58".8 Mag 18.1:3/29, Type unknown (Discovery image) (Stan Howerton image)

MASTER OT J111224.35-321250.1, ATEL 7263 discovered 2015/03/19.973 by MASTER robotic Net
Found in PGC 3081825 at R.A. = 11h12m24s.35, Decl. = -32°12'50".1
Located 19".8 east and 14".7 north of the center of PGC 3081825 (Discovery image) (Kunihiro Shima image)
Mag > 19.0:3/22 (18.9:3/20), Type unknown

ASASSN-15fk (= MASTER OT J054012.24-384842.1), ATEL 7259 discovered 2015/03/19.120 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 05h40m12s.18, Decl. = -38°48'42".5
Located 23".4 west and 13".9 south of the center of the host galaxy (Discovery image) (Seiichiro Kiyota image)
Mag 17.8:3/31 (17.0:3/19), Type Ia (References: ATEL 7332, ATEL 7343)

ASASSN-15fj, ATEL 7257 discovered 2015/03/18.630 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 17h10m08s.55, Decl. = +74°43'42".6
Located 0".3 west and 0".4 south of the center of the host galaxy (Discovery image) (Kunihiro Shima image) (Masanori Mizutani image)
Mag 15.6:3/30, Type Ia (z=0.045) (References: ATEL 7287)

ASASSN-15fi, ATEL 7256 discovered 2015/03/17.630 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in Mrk 884 at R.A. = 16h31m48s.80, Decl. = +20°24'38".5
Located 0".6 east and 0".3 south of the center of Mrk 884 (Discovery image) (Kunihiro Shima image)
Mag 17.2:3/17, Type II (References: ATEL 7284)

MASTER OT J053934.36-275536.9, ATEL 7252 discovered 2015/03/18.810 by MASTER robotic Net
Found in PGC 178633 at R.A. = 05h39m34s.36, Decl. = -27°55'36".9
Located 13".9 east and 10".7 north of the center of PGC 178633 (Discovery image)
Mag 18.7:3/18, Type unknown

ASASSN-15fa (= Gaia15adb), ATEL 7245 discovered 2015/03/17.630 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 6319 at R.A. = 17h09m46s.03, Decl. = +62°58'27".0
Located 13".4 east and 4" north of the center of NGC 6319 (Discovery image) (Kunihiro Shima image) (Masanori Mizutani image) (Kunihiro Shima image) (JM Llapasset image) (Paolo Campaner image)
Mag 17.1:4/9 (15.9:3/20), Type Ia (z=0.02741) (Padova-Asiago spectrum) (References: ATEL 7253)

PSN J02330480+3530396, CBAT TOCP discovered 2015/03/15.580 by Zhijian Xu and Xing Gao
Found in MCG +6-6-53 at R.A. = 02h33m04s.80, Decl. = +35°30'39".6 (= PGC 9714)
Located 7".4 east and 11".4 north of the center of MCG +6-6-53 (Discovery image) (Jujia Zhang and Yufeng Fan image)
Mag 17.2:3/15, Type Ia (z=0.045) (References: ATEL 7243; SN 2003ii)

PSN J15053007+0138024 (= SNhunt281), CBAT TOCP discovered 2015/03/16.490 by Catalina Real-Time Transient Survey and Stan Howerton
Found in NGC 5839 at R.A. = 15h05m30s.07, Decl. = +01°38'02".4
Located 39" east and 3" south of the center of NGC 5839 (Discovery image) (Stan Howerton image) (Stan Howerton image) (Kunihiro Shima image) (CRTS image) (Marc Deldem image) (Stan Howerton image) (Aurelio Grillo image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (Marc Deldem image) (Paolo Campaner image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (Jaroslaw Grzegorzek image) (Stan Howerton image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image)
Mag 16.2:5/7 (13.6:4/3), Type Ia-91bg (Howerton Light curve) (References: ATEL 7251)

PS15mb (= ASASSN-15ez) ATEL 7212 discovered 2015/03/10.289 by PS1 Science consortium; All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 08h59m40s.20, Decl. = +15°11'12".5
Located 0".4 east and 1".2 south of the center of the host galaxy (Discovery image) (Gianpiero Locatelli image) (ASASSN image) (Rafael Benavides image) (Kunihiro Shima image) (Gregor Krannich image) (Masanori Mizutani image) (Diego Rodriguez image) (JM Llapasset image) (JM Llapasset image)
Mag 17.6:4/14 (15.8:3/19), Type Ia (References: ATEL 7219, 7228, 7229, 7234)

PSN J08593491+4555343 (= PS15tb), (= Gaia15acx), CBAT TOCP discovered 2015/03/12.810 by F. Ciabattari, E. Mazzoni and G. Petroni (ISSP)
Found in UGC 4709 at R.A. = 08h59m34s.91, Decl. = +45°55'34".3
Located 4" east and 4" south of the center of UGC 4709 (Confirmation image) (Paolo Campaner image) (Massimo Caimmi image) (Juan-Luis Glez. Carballo image) (William Wiethoff image) (Rafael Benavides image) (Masanori Mizutani image) (JM Llapasset image) (Kunihiro Shima image) (Gianpiero Locatelli image) (PS1 image)
Mag 17.4:3/25 (15.8:3/15), Type Ia (z=0.0281) (Padova-Asiago spectrum) (References: ATEL 7222, ATEL 7234)

PSN J12465110+0950521 (SNhunt280), CBAT TOCP discovered 2015/03/11.450 by Catalina Real-Time Transient Survey and Stan Howerton
Found in an anonymous galaxy at R.A. = 12h46m51s.10, Decl. = +09°50'52".1 (near IC 816)
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Joseph Brimacombe image) (Kunihiro Shima image)
Mag 18.0:3/22, Type unknown

LSQ15rw (= LSQ14rw) ATEL 7214 discovered 2015/02/22 by La Silla-QUEST at R.A. = 14h32m31s.33, Decl. = -13°39'27".4 Mag 19.5:02/22, Type IIb (z=0.021) (References: ATEL 7225)

2015F (= PSN J07361576-6930230), CBET 4081 discovered 2015/03/09.789 by Berto Monard
Found in NGC 2442 at R.A. = 07h36m15s.76, Decl. = -69°30'23".0
Located 40" west and 84" north of the center of NGC 2442 (Discovery image)
Mag 15.1:4/29 (12.9:3/22), Type Ia (z=0.004) (References: ATEL 7209, ATEL 7220, CBAT TOCP; SN 1999ga)
2015F images sub-page

MASTER OT J202246.23+074636.3, ATEL 7191 discovered 2015/03/09.093 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 20h22m46s.23, Decl. = +07°46'36".3
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Kunihiro Shima image)
Mag 17.3:3/22 (16.0:3/9), Type unknown

PSN J17133770+3737597, CBAT TOCP discovered 2015/03/05.850 by THU-NAOC Transient Survey (TNTS)
Found in an anonymous galaxy at R.A. = 17h13m37s.70, Decl. = +37°37'59".7
Located 0" east and 2" north of the center of the host galaxy (Discovery image) (Kunihiro Shima image)
Mag 15.9:3/22, Type unknown

PSN J13215756+3843229, CBAT TOCP discovered 2015/03/04.335 by R. Gagliano, D. Post, Jack Newton, and Tim Puckett
Found in NGC 5112 at R.A. = 13h21m57s.56, Decl. = +38°43'22".9
Located 13" east and 42" south of the center of NGC 5112 (Discovery image) (Manfred Mrotzek image) (Giancarlo Cortini image) (Joseph Brimacombe image) (Kunihiro Shima image)
Mag 19.3:3/12 (18.0:3/4), Type LBV (z=0.003252) (References: ATEL 7223)

ASASSN-15ed (= PS15nk), ATEL 7163 discovered 2015/03/01.590 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in MCG +9-27-87 at R.A. = 16h48m25s.16, Decl. = +50°59'30".7 (= PGC 59030)
Located 1".0 west and 4".9 south of the center of MCG +9-27-87 (Discovery image) (PS1 image) (Kunihiro Shima image) (Joseph Brimacombe image)
Mag 17.4:3/22 (17.1:3/1), Type Ibn (z=0.049) (Padova-Asiago spectrum) (References: ATEL 7219)

PSN J22171486+3534004 (= Gaia15acn), CBAT TOCP discovered 2015/02/20.071 by Zhangwei Jin and Xing Gao; Gaia Photometric Science Alerts programme
Found in UGC 11975 at R.A. = 22h17m14s.86, Decl. = +35°34'00".4
Located 55".0 west and 15".8 south of the center of UGC 11975 (Discovery image) (Z. Jin image) (X. Gao image) (Kunihiro Shima image)
Mag 16.3:3/22 (15.8:3/7), Type unknown (References: SN 2011fs)

ASASSN-15eb, ATEL 7157 discovered 2015/02/26.330 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 561-G12 at R.A. = 08h06m07s.40, Decl. = -22°33'48".9
Located 1".2 west and 0".4 north of the center of ESO 561-G12 (Discovery image) (Joseph Brimacombe image) (Kunihiro Shima image)
Mag 16.0:2/26, Type Ia (z=0.018) (References: ATEL 7180)

ASASSN-15dz, ATEL 7145 discovered 2015/02/20.590 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in CGCG 80-55 at R.A. = 16h41m20s.87, Decl. = +08°54'31".7
Located 0".3 west and 0".9 south of the center of CGCG 80-55 (Discovery image) (Joseph Brimacombe image) (Kunihiro Shima image)
Mag 15.9:3/22, Type Ia (z=0.033) (References: ATEL 7180)

MASTER OT J081659.74+511233.7 (= PS15sg) (= Gaia15act) (= CSS150207:081700+511235), ATEL 7129 discovered 2015/02/07 by MASTER robotic Net; Catalina Real-Time Transient Survey
Found in an anonymous galaxy at R.A. = 08h16m59s.74, Decl. = +51°12'33".7
Located 0" east and 0" north of the center of the host galaxy (MASTER Discovery image) (CRTS Discovery image) (William Wiethoff image) (Gianpiero Locatelli image) (Masanori Mizutani image) (Masanori Mizutani image) (Kunihiro Shima image) (PS1 image)
Mag 18.7:3/23 (17.1:2/21), Type Ia (z=0.05) (References: ATEL 7156, ATEL 7174)

MASTER OT J100540.87+134751.1, ATEL 7127 discovered 2015/02/21.854 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 10h05m40s.87, Decl. = +13°47'51".1
Located 0" east and 0" north of the center of the host galaxy (Discovery image) (Masanori Mizutani image) (William Wiethoff image) (Kunihiro Shima image)
Mag 18.4:3/17 (18.2:2/21), Type Ia (z=0.064) (References: ATEL 7174)

PSN J07164258+2951227, ATEL 7125 discovered 2015/02/23.216 by Lick Observatory Supernova Search
Found in UGC 3777 at R.A. = 07h16m42s.58, Decl. = +29°51'22".7
Located 4" west and 5" south of the center of UGC 3777 (Discovery image) (Gianpiero Locatelli image) (Manfred Mrotzek image) (Nick James image) (William Wiethoff image) (Gregor Krannich image) (Joseph Brimacombe image) (Andrea Mantero image) (Rafael Benavides image) (Rafael Benavides image) (Kunihiro Shima image)
Mag 16.3:3/15 (16.0:3/8), Type II (z=0.010) (References: ATEL 7195, CBAT TOCP)

PSN J20580766-5147074 (= Gaia15acs), CBAT TOCP discovered 2015/02/22.129 by Berto Monard
Found in an PGC 65805 at R.A. = 20h58m07s.66, Decl. = -51°47'07".4
Located 10" west and 2" north of the center of PGC 65805 (Discovery image) (Confirmation image)
Mag 17.8:3/9 (16.3:2/22), Type Ib (z=0.02) (References: ATEL 7209)

PSN J10491665-1938253 (= PS15um) (= LSQ15ok), CBAT TOCP discovered 2015/02/02 by Koichi Itagaki; La Silla-QUEST
Found in ESO 569-G12 at R.A. = 10h49m16s.65, Decl. = -19°38'25".3 (= PGC 032373)
Located 1" west and 12" south of the center of ESO 569-G12 (Discovery image) (Kunihiro Shima image) (Seiichiro Kiyota image) (Kunihiro image) (LOSS image) (Kunihiro. Shima image) (Seiichiro Kiyota image) (T. Yusa image) (PS1 image)
Mag 16.9:3/25 (16.8:2/20), Type IIP (z=0.01) (References: ATEL 7140 ATEL 7143)

PSN J12350637+3114354 (= PS15xn) (= CSS150219:123506+311436) (= iPTF15ku), CBAT TOCP discovered 2015/02/14.43 by Palomar Transient Factory; THU-NAOC Transient Survey (TNTS)
Found in PGC 41898 at R.A. = 12h35m06s.37, Decl. = +31°14'35".4
Located 9" east and 12" north of the center of PGC 41898 (Discovery image) (Gianpiero Locatelli image) (Kunihiro Shima image) (CRTS image) (Masanori Mizutani image) (H. Mikuz image) (PS1 image)
Mag 16.9:3/30, Type Ia-91T (z=0.028178) (References: ATEL 7109, ATEL 7119)

TCP J13535979-0755079 (= MLS150414:135400-075506) (= SNHunt279), CBAT TOCP discovered 2015/02/14.480 by Catalina Real-Time Transient Survey
Found in NGC 5339 at R.A. = 13h53m59s.79, Decl. = -07°55'07".9
Located 7" west and 43" north of the center of NGC 5339 (Discovery image) (Kunihiro Shima image) (MLS image)
Mag 18.85:4/14, Type unknown (References: SN 2013aj)

PSN J14095513+1731556 (= SNhunt278) (= CSS150214:140955+173155), CBAT TOCP discovered 2015/02/14.440 by Catalina Real-Time Transient Survey and Stan Howerton
Found in NGC 5490 at R.A. = 14h09m55s.13, Decl. = +17°31'55".6
Located 33" west and 49" south of the center of NGC 5490 (Discovery image) (CRTS image) (Kunihiro Shima image) (Stan Howerton image) (Stan Howerton image) (Gianluca Masi image) (Marc Deldem image) (Gianluca Masi image) (Marc Deldem image) (Marc Deldem image) (Led image)
Mag 21.3:4/18 (16.8:2/18), Type Ia-91bg (z=0.016) (References: ATEL 7074, ATEL 7091, ATEL 7156; SN 1997cn)

PSN J10234760+3348477 (= CSS150214:102348+334847), CBAT TOCP discovered 2015/02/13.312 by Robert Gagliano, Dick Post, Jack Newton, and Tim Puckett
Found in UGC 5623 at R.A. = 10h23m47s.60, Decl. = +33°48'47".7
Located 13" west and 19" north of the center of UGC 5623 (Discovery image) (Manfred Mrotzek image) (CRTS image) (Kunihiro Shima image) (Robert Koff image) (Andrea Mantero image) (Gianpiero Locatelli image) (Masanori Mizutani image) (Marc Deldem image) (Gregor Krannich image) (Andrea Mantero image) (Marc Deldem image) (Marc Deldem image)
Mag 18.7:4/7 (17.0:2/15), Type IIb (z=0.034) (References: ATEL 7087)

PSN J14021678+5426205 (= iPTF13afz), CBAT TOCP discovered 2015/01/20.803 by Ciprian Dumitru Vintdevara
Found in M101 at R.A. = 14h02m16s.78, Decl. = +54°26'20".5
Located 489" west and 324" north of the center of M101 (Discovery image) (Confirmation image) (Koichi Itagaki image) (Koichi Itagaki image) (Kiochi Itagaki image) (Kiochi Itagaki image) (Robert Koff image) (Stan Howerton image) (Manfred Mrotzek image) (Joseph Brimacombe image) (Kunihiro Shima image) (Domenico De Luca image) (Marco Burali image) (Andrea Mantero image)
Mag 19.86:3/11 (16.5:2/15), Type LRN (References: ATEL 7063, 7069, 7070, 7072, 7079, 7082, 7206, vsnet-alert 18292 vsnet-alert 18293; SN 2011fe 1970G 1951H 1909A)

PSN J09093496+3307204 (= PSN J09093506+3307221) (= iPTF13efv) (= SNhunt275), CBAT TOCP discovered 2015/02/07.390 by Catalina Real-Time Transient Survey and Stan Howerton
Found in NGC 2770 at R.A. = 09h09m34s.96, Decl. = +33°07'20".4
Located 16" east and 4" south of the center of NGC 2770 (Discovery image) (Stan Howerton image) (Gianpiero Locatelli image) (Giancarlo Cortini image) (Stan Howerton image) (Stan Howerton image) (Stan Howerton image) (Xing Gao image) (Manfred Mrotzek image) (Stan Howerton image) (Stan Howerton image) (Stan Howerton image) (Stan Howerton image) (Ron Arbour image) (Stan Howerton image) (Ron Arbour image) (Andy Cason image) (Rochardson image) (Ron Arbour image)
Mag 15.4:5/20, Type LBV (z=0.0064) (Stan Howerton light curve) (References: ATEL 7042, 7409, 7514, 7515, 7517, 7541, 7543, PSN J09093506+3307221; SN 2008D, 2007uy, 1999eh)

ASASSN-15bk (= PS15yq) (= Gaia15aao), ATEL 6979 discovered 2015/01/12.148 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in CGCG 78-56 at R.A. = 15h44m12s.43, Decl. = +11°16'16".4
Located 6".9 east and 1".6 north of the center of CGCG 78-56 (Discovery image) (Wim Cuppens image) (Gaia image) (Manfred Mrotzek image) (PS1 image)
Mag 20.1:3/31 (16.7:1/24), Type Ia (z=0.0343) (References: ATEL 6988, 7012, 7014, 7021)

ASASSN-15bd, ATEL 6945 discovered 2015/01/08.64 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 15h54m38s.33, Decl. = +16°36'38".1
Located 1".0 west and 0".4 north of the center of the host galaxy (Discovery image) (Kunihiro Shima image)
Mag 16.2:1/29, Type IIb (References: ATEL 6956, ATEL 7351)

ASASSN-15bb (= Gaia15acj), ATEL 6936 discovered 2015/01/16.270 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 381-IG48 at R.A. = 13h01m06s.38, Decl. = -36°36'00".2
Located 10".0 east and 2".2 north of the center of ESO 381-IG48 (Discovery image) (Kunihiro Shima image)
Mag 16.9:2/20 (16.5:1/17), Type IIP (z=0.0157) (References: ATEL 6948)

PSN J13522411+3941286, CBAT TOCP discovered 2015/01/09.897 by Zhangwei Jin and Xing Gao
Found in NGC 5337 at R.A. = 13h52m24s.11, Decl. = +39°41'28".6
Located 12".2 east and 14".1 north of the center of NGC 5337 (Discovery image) (Kunihiro Shima image) (E. Conseil image) (Masanori Mizutani image) (Stan Howerton image) (Wim Cuppens image) (Jaroslaw Grzegorzek image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (JM Llapasset image) (Paolo Campaner image) (JM Llapasset image) (JM Llapasset image) (LOSS image)
Mag 16.8:5/7 (15.6:2/19), Type IIn (z=0.007222) (References: ATEL 6939)

PSN J06574303+1334457, CBAT TOCP discovered 2015/01/12.276 by Lick Observatory Supernova Search
Found in UGC 3617 at R.A. = 06h57m43s.03, Decl. = +13°34'45".7
Located 31" west and 15" north of the center of UGC 3617 (Discovery image) (Gianpiero Locatelli image) (Kunihiro Shima image) (Joseph Brimacombe image) (Rafael Benavides image) (Gianpiero Locatelli image) (Juan-Luis Glez. Carballo image)
Mag 17.6:3/9 (16.2:1/16), Type II (z=0.013) (References: ATEL 6909)

2015B (= PS15px) (= PSN J12543553-1234186), CBET 4046 discovered 2015/01/05.123 by Simone Leonini, M. Conti, G. Guerrini, P. Rosi and L.M. Tinjaca Ramirez (ISSP)
Found in NGC 4782 at R.A. = 12h54m35s.53, Decl. = -12°34'18".6
Located 2" west and 10" south of the center of NGC 4782 (Discovery image) (M. Caimmi image) (Stan Howerton image) (Kunihiro Shima image) (Wim Cuppens image) (PS1 image)
Mag 19.0:3/20 (15.0:1/5), Type Ia (z=0.015) (Padova-Asiago spectrum) (References: ATEL 6899, CBAT TOCP; SN 1956B)

2014ea (= PSN J10483231+2635179) (= CSS141215:104832+263518), CBET 4054 discovered 2014/12/15.500 by Catalina Real-Time Transient Survey
Found in UGC 5912 at R.A. = 10h48m32s.31, Decl. = +26°35'17".9
Located 67" east and 16" north of the center of UGC 5912 (Discovery image) (Wim Cuppens image) (Stan Howerton image) (Kunihiro Shima image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image)
Mag 19.1:4/7 (15.5:12/22), Type Ia (z=0.021) (Padova-Asiago spectrum) (References: ATEL 6835, CBAT TOCP; SN 1977F, 1971U)

ASASSN-14lp, ATEL 6795 discovered 2014/12/09.610 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 4666 at R.A. = 12h45m09s.10, Decl. = -00°27'32".5 (AAVSO finder chart)
Located 7".5 east and 10".5 north of the center of NGC 4666 (Discovery image)
Mag 15.3:4/13 (11.1:12/18), Type Ia (z=0.005101) (References: ATEL 6801, ATEL 6815; SN 1965H)
ASASSN-14lp images sub-page

2014dt, (= PSN J12215757+0428185), CBET 4011 discovered 2014/10/29.838 by Koichi Itagaki
Found in M61 at R.A. = 12h21m57s.57, Decl. = +04°28'18".5
Located 33".9 east and 7".2 south of the center of M61 (Discovery image)
Mag 17.6:4/22 (13.2:10/30), Type Ia-pec (z=0.0052) (Padova-Asiago spectrum) (References: ATEL 6648, ATEL 6772, CBAT TOCP; SN 2008in, 2006ov, 1999gn, 1964F, 1961I, 1926A)
2014dt images sub-page

MASTER OT J120451.50+265946.6, ATEL 6634 discovered 2014/10/28.875 by MASTER robotic Net
Found in NGC 4080 at R.A. = 12h04m51s.50, Decl. = +26°59'46".6
Located 4" west and 13" north of the center of NGC 4080 (Discovery image) (Kunihiro Shima image) (Joseph Brimacombe image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (JM Llapasset image) (Stan Howerton image) (JM Llapasset image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (Marc Deldem image) (JM Llapasset image)
Mag 17.0:4/8 (13.9:11/3), Type Ib (z=0.00189) (Padova-Asiago spectrum) (References: ATEL 6639, (6640 corrected) 6641, 6712, 6719, 6755, 7351)

archive.gif For Supernovae which have faded below 18th magnitude,
you will have to look in the archives
Other supernovae from 2015 Other Extragalactic Novae from 2015 Unconfirmed objects from 2015
Other supernovae from 2014 Other Extragalactic Novae from 2014 Unconfirmed objects from 2014
Supernovae from 2013 Extragalactic Novae from 2013 Unconfirmed objects from 2013


Do you have a Supernova image you are willing to share with others? Please tell me about it! Don't be a data miser, share your data with others! I prefer to link to images already at a location on the web, but if you send me an image (jpeg or gif preferred) I will post and index it.

I plan to report only "bright" Supernova (above mag 17.5) on this page. Note that you are going to need a big telescope to find most of these things, for instance, a "Mag 14" SN probably won't be visible to the eye in anything less than a 10" telescope. A CCD, however, can often detect a Mag 14 object with a much smaller objective. Those SN which are easily findable by amateurs (above mag 14.0) will be in red.

The format is as follows:

If possible I will create an icon for every bright supernova. This icon will be black on a white background and mirror imaged left to right so that North is up and East is left. The exception being a color image, which will have he same orientation. All icons will be less than 100x100 pixels in size so that they load quickly.


Please send feedback to David Bishop dbishop@vhdl.org.   This web page is brought to you by the Astronomy Section of the Rochester Academy of Sciences.   This page is supported by Tenagra Observatory.   If you use this page in your research, please reference arXiv:1103.5165.