Supernova 1999dn in NGC 7714

This page is devoted to information on Supernova 1999dn in NGC 7714 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. Information on the original web pages for many of these images can be found on the Supernova links web page.

This one is a BAO Supernova Survey discovery. There is some controversy as to the type of this SN, It was originally reported as a type Ic, like 1997X, but the consensus now is type Ib/c. This SN has already peaked (somewhere around August 20, 1999) and is now starting to dim. The 6th magnitued star 16 Picseium is only 3 arc minutes away from this galaxy, so watch out for glare.

Web pages dedicated to this SN.

  • AUDE has a 1999dn page in French [Translate]

    The following is a list of images of this SN, in chronological order. Click on the name in the "observer" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!
    Larry Robinson image 8/21.2/99C
    Roland SANTALLO image 8/22.554/9915.3C Mirror
    Fred Ewalt image 8/23.829/9915.5C
    Pepe Manteca image 8/24/99C
    Jean Marie LLAPASSET image 8/31.880/99C
    Hubert Lehmann image 9/3/9915.82C Caption file
    Juan Gonçalves and João Porto image 9/4.115/9915.82C
    Pedro Ré image 9/7.946/99C
    Jean Marie LLAPASSET image 9/7.947/9916.1R
    Kereszty Zsolt image 9/10.9431/9916.58C
    Roland Santallo images 9/11.072/99C mirror
    Enrico Prosperi image 9/11/99C log greyscale
    Stephen M. Brincat image 9/14.024/99C
    Marko Moilanen image 9/14.045/99C
    Kopernik image 9/19.104/99C
    S. Moretti and
    S. Tomaselli image
    JM Llapasset image 10/8.927/99C
    Pedro Ré image 10/26/99<18.0C

    Light curves and Spectra: BAO spectrum Taken 8/21.7/99

  • VSNET Light curve (requires JAVA).
    If you have observations of this Supernova, please send them to Use this VSNet data query to see what information has been reported so far. Other VSNet data on this SN:
  • [vsnet-alert 3377] SN 1999dn in NGC 7714
  • [vsnet-chart 195] Chart of SN1999dn
  • [vsnet-chat 2253] Host galaxy of SN1999dn
  • [vsnet-alert 3380] Spectroscopy of SN 1999dn
  • [vsnet-chat 2255] NGC7714 spectrum

    Latest Photometry:

  • [vsnet-recent 30209] SN1999dn recent (cont'd)
  • [vsnet-recent 33167] SN1999dn recent (cont'd)
  • [vsnet-recent-wanted 5787] SN1999dn observation needed
    Back to Bright Supernovae.
    Back to Bright Supernovae - 1999
    David Bishop
    Last modified: Mon Mar 6 11:41:21 EST 2000