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.

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.

Web pages dedicated to this SN.
• SNWeb has a 2003hy page

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 Credit	Date	Mag	Filter	Comments
Tom Boles image	2003/09/14.007	16.6	C	Discovery, mirror
Mark Armstrong image	2003/09/14.984	16.3	C	Confirmation, local mirror
JM Llapasset image	2003/09/16.806	16.0:	CR
J. Nicolas image	2003/09/17.857	16.0	CR
JM Llapasset image	2003/09/24.800	16.4:	CR
Josep M. Bosch image	2003/09/28.910	15.8	CR
Diego Rodriguez image	2003/10/04.910	15.9	CR
JM Llapasset image	2003/10/09.803	16.5	CR
JM Llapasset image	2003/10/14.783	16.6	CR
JB deVanssay image	2003/10/16.897	16.9	CR
JM Llapasset image	2003/10/25.763	17.0	CR
R. Poncy image	2003/10/27.789	16.9	CR
Kopernik image	2003/12/28.024	19.4:	C

Light curves and Spectra:
• CfA spectrum taken 2003/03/09, showing a featureless spectrum
• SNWeb Measurements and light curve.
• VSNET Light curve (requires JAVA).

Other VSNet data on this SN:
• [vsnet-campaign-sn 691] SNe information from IAUC 8200
• [vsnet-campaign-sn 695] SNe information from IAUC 8203-4