Supernova 2001ac in NGC 3504

This page is devoted to information on Supernova 2001ac in NGC 3504 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 Supernova links web page.

sn01ac_i.jpg This is one of the subluminous type II supernovae, similar to 1997bs, 1999bw and 2000ch. One of the thoughs on these is that they might be Eta Carini type outburst. HST image of NGC 3504. We have a DSS Photometry reference image made by Odd Trondal. Icon created from the CROSS image.

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!
LOTOSS image 2001/03/12.418.2CDiscovery
CROSS image 2001/03/13Ccolor, local mirror
Arne Danielsen image 2001/03/17.80617.8CR
Pepe Manteca image 2001/03/18.97518:C local mirror
Rafael Ferrando image 2001/03/18.86018.0R
Kopernik image 2001/03/19.15918.5C
Odd Trondal image 2001/03/20.99318:C
Rafael Ferrando image 2001/04/23.88219:C

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.
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Back to Bright Supernovae - 2001
David Bishop
Last modified: Fri Jun 8 13:07:59 EDT 2001