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CRTS Supernova Candidate in NGC 539

ATEL # 1772; A.J. Drake, R. Williams, S.G. Djorgovski, M.J. Graham, A. Mahabal(Caltech); M. Catelan (PUC); E.C. Beshore, S.M. Larson, R. Hill (LPL/UA); E. Christensen (Gemini Observatory);
on 9 Oct 2008; 8:40 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Andrew J. Drake (

Subjects: Nova, Supernova, Transients

We have detected a likely Supernova in CSS images from 09 Oct 2008 UT. The detection has the following parameters:

CSS081009:012523-181020 2008-10-09 UT 07:20:41 RA 01:25:23.04 Dec -18:10:20.2 Mag 16.3 Type SN

The object is near a spiral arm of galaxy NGC 539 (z=0.032). No transients are present in earlier epochs of CSS imaging including data taken on or before the 5 Nov 2007 (to mag ~19), or prior DSS1 and DSS2 images to mag ~21. Follow-up is requested.

For finding charts and discovery images please see:
Current candidate and confirmed SNe can be found here.
CRTS optical transients are detected and published as VOEvents in real-time at and in RSS here

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R. E. Rutledge , Editor
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