Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J22401702-0225341
PSN J22401702-0225341 2012 12 06.3834* 22 40 17.02 -02 25 34.1 15.6 U 27E 6S I 0
2012 12 06.45372
Mag.=15.3U, R.A.=22 40 17.05 Decl=-02 25 34.1 (UCAC-3), using 0.3-m f/9.9 Cassegrain + CCD(SBIG STL-1001E) at Osaki, JAPAN (D92). Position and magnitude were measured on an image composed from 5-frames which were taken by each 60-seconds exposure under the limiting magnitude = 18.5. Observer T. Yusa and N. Wada, Osaki, Japan.
2012 12 06.383
Image: http://www.k-itagaki.jp/psn.jpg
2012 12 06.45372
T. Yusa's confimatory image; http://space.geocities.jp/yusastar77/supernova/PSNi121206.htm
2012 12 06.441
Mag.= 15.7 observed by Toshihide Noguchi, Chiba-ken, Japan, Position end figures 17s.03, 34".1 from an image composed by two frames taken by each 50-s exposure using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD. The limiting mag.= 18.0. Position and magnitude was measured using UCAC3. Image was posted at http://park8.wakwak.com/~ngc/images/PSN_J22401702-0225341.jpg.
2012 12 08.0686
L. Elenin (Lyubertsy, Russia) and I. Molotov (Moscow, Russia) confirm an apparent supernova PSN J22401702-0225341. Object visible on 3x300sec images remotely taken at ISON-NM Observatory (Mayhill, NM, USA) with 0.45-m f/2.8 telescope + CCD (KAF09000) on Dec. 8.0686. Object located at 22h 40m 17s.04 +/- 0".09, -02d 25' 34".3 +/- 0".05 (UCAC-4) with magnitude 15.4U (mag. limit ~20.5m). Nothing is visible at this position on the POSS and POSSII images. Image of PSN J22401702-0225341 available at http://spaceobs.org/images/TOCP/PSNJ22401702-0225341-20121208.png
2012 12 08.099
This possible supernova in MCG-1-57-21 was detected with 4 x 15 min images using a luminance filter Astrometry: RA 22 40 17.03 Dec -02 25 34.0 Photometry: 15.23 +/- 0.16 L (V for ref) These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information http://www.flickr.com/photos/43846774@N02/8261896229/
