Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00392567+4037451

PNV J00392567+4037451   2013 02 10.4702*  00 39 25.67 +40 37 45.1  17.3 U 2240W2303S  M31       N 0

2013 02 10.4702

Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report the discovery of a possible nova .(mag.= 17.3) in M31 on seven 40-s unfiltered CCD frames taken around 2013 Feb. 10.47024 UT, ( limiting magnitude = 19.4 ) using a Meade 200R 0.40-m f/9.8 reflector (+SBIG STL1001E camera). as follows Nothing is visible at this location on our past frames taken on 2013 Jan. 28.451 UT (limiting magnitude = 19.5). but predicover mag= 18.7, Feb. 09.478 UT (limiting magnitude = 19.1) . We have checked in Minor Planets. Nothing is visible at the position of possible nova on the Digitized Sky Survey(POSS2/UKSTU) from 1989 Oct. 01 (limiting red mag 20.2) and 1993 Sep. 23(limiting infrared mag 19.5). the nearest star in M31 catalogue (http://www.lowell.edu/users/massey/lgsurvey.html) has position end figures 26s31, 42."7, distance 7."7, magnitudes V=21.8, B=23.3, R=21.0

2013 02 10.526

Mag.= 17.2, position end figures 25s.63, 44".4 observed by T. Noguchi, Chiba-ken, Japan, from a stacked image (limit mag.= 18.0) exposed by each 40-s x two frames using 0.23-m f/6.3 Schmidt-Cassegrain + unfiltered CCD (BITRAN BT-11E). Position and magnitude were measured using UCAC3. See an image at http://park8.wakwak.com/~ngc/images/PNVinM31_20130210.jpg.

2013 02 11.119

This possible nova in M31 was detected with 7 x 15 min images using a luminance filter Astrometry: RA 00 39 25.65 Dec +40 37 45.2 Photometry: 17.45 +/- 0.06 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@N02/8487762893/