Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J22230828-2856515

PSN J22230828-2856515   2012 10 09.4909*  22 23 08.28 -28 56 51.5  14.6 U   44E  39N  N7259     0 0

2012 10 09.515

Discovered by K. Hatayama, Japan. PSN was found on a frame taken on 2012 Oct. 9.491 UT using 0.25-m f/6.3 Schmidt Cassegrain + unfiltered CCD under the limiting magnitude = 16.5. PSN is confirmed on the following five frames taken during 35 minutes without motion. Nothing is visible at this location on a frame taken on 2010 July 18.727 UT. But he found there is a very faint star (out of his limiting magnitude) on DSS.

2012 10 10

This PSN might be SN 2009ip. see ATel #4412 etc. (Seiichiro Kiyota, Japan)

2012 10 10.15650

Mag.=13.9, R.A.= 01 32 57.24 Decl= +30 24 25.8 (USNO-B1.0),remotely using 0.50-m f/4.5 astrograph + unfiltered CCD (FLI ProLine PL11002M ) at the RAS Observatory near Mayhill,NM,U.S.A.. Position and magnitude were measured on an image composed from 2-frames which were taken by each 120-seconds exposure under the limiting magnitude = 19.3 Observer: Toru Yusa, Osaki, Japan. Link to image : http://www.palette.furukawa.miyagi.jp/space/images/2012/PSNin7259_121010.jpg

2012 10 10

The posted image confirms that this is 2009ip, an LBV which has flared into a type IIn supernova. Please see: http://www.RochesterAstronomy.org/supernova.html#2009ip