Supernova 2003hy in IC 5145

This page is devoted to information on Supernova 2003hy in IC 5145.   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 updates and links web pages.

sn03hy_i.jpg Discovered almost at the same time by the UK amateurs Tom Boles and Mark Armstrong.   This one is an oddball.   If you take a look at the spectrum, you will see almost no spikes.   Thus there is some discussion if this is a supernova at all.   It is far too bright to be an Eta Carini like outburst or a nova, so what is it?   We have a DSS Photometry reference image made by Odd Trondal.  Icon generated from Tom Boles discovery image.  This supernova is in the Constellation Capracornus.

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
Tom Boles image 2003/09/14.00716.6CDiscovery, mirror
Mark Armstrong image 2003/09/14.98416.3CConfirmation, local mirror
JM Llapasset image 2003/09/16.80616.0:CR
J. Nicolas image 2003/09/17.85716.0CR
JM Llapasset image 2003/09/24.80016.4:CR
Josep M. Bosch image 2003/09/28.91015.8CR
Diego Rodriguez image 2003/10/04.91015.9CR
JM Llapasset image 2003/10/09.80316.5CR
JM Llapasset image 2003/10/14.78316.6CR
JB deVanssay image 2003/10/16.89716.9CR
JM Llapasset image 2003/10/25.76317.0CR
R. Poncy image 2003/10/27.78916.9CR
Kopernik image 2003/12/28.02419.4: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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David Bishop
Last modified: Tue Dec 30 09:00:49 EST 2003