Supernovae 2021J in NGC 4414

This page is devoted to information on Supernova 2021J in NGC 4414.   Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page.   Information on the original web pages for many of these images can be found on the links web page.

image Discovered by Zwicky Transient Facility (ZTF) (USA).   This one is a Type Ia.   We have a Photometry reference image made by JM Llapasset.   This supernova is in the Constellation Coma Berenices.

The following is a list of images of this SN, in chronological order. Click on the name in the "Image Credit" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!

Image CreditDateMagFilterComments
Jean-Claude Merlin 2021/01/08.36813.8C
Paolo Campaner 2021/01/12.11412.9C
Jean-Claude Merlin 2021/01/13.39912.8C
Jean-Claude Merlin 2021/01/15.54412.5C
Jean-Claude Merlin 2021/01/16.39712.6C
Simone Bolzoni 2021/01/20.16012.5V
Jean-Claude Merlin 2021/01/22.37212.4C
Koichi Itagaki 2021/01/22.72312.4C
Enrico Prosperi 2021/01/27.09214.2CR
Jean-Claude Merlin 2021/01/29.39413.1C
Giovanni Calapai 2021/02/03.979C
Jean-Claude Merlin 2021/02/05.34013.5C
Jean-Claude Merlin 2021/02/08.51013.7C
Mathieu Chauveau 2021/02/10.972C
Jean-Claude Merlin 2021/02/11.46914.0C
Gianluca Masi 2021/02/11.97413.1R
Florian Riemer 2021/02/13.000C marked image wide field image source page
Manfred Mrotzek 2021/02/13.080C
Gerhard Rammes 2021/02/21.000Ccolor
Jim Johnston 2021/02/22.000Ccolor
Jean-Claude Merlin 2021/02/22.29314.6C
Jean-Claude Merlin 2021/03/03.30814.9C
Gerhard Rammes 2021/03/06.000Ccolor
Yuji Tanaka 2021/03/14.592C
Felipe Peņa 2021/03/15.388C
Enrico Prosperi 2021/03/16.000C
Enrico Prosperi 2021/03/16.000C
Jean-Claude Merlin 2021/05/17.236C
Enrico Prosperi 2021/06/03.832C

Light curves and Spectra:

If you have observations of this Supernova, please send them to vsnet-obs

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David Bishop