Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00424629+4113517

PNV J00424629+4113517   2013 02 22.4256*  00 42 46.29 +41 13 51.7  17.2 U   22E 137S  M31       N 0

2013 02 22.4256

Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report the discovery of a possible nova .(mag.= 17.2) in M31 on seven 40-s unfiltered CCD frames taken around 2013 Feb. 22.42561 UT, ( limiting magnitude = 18.7 ) 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 Feb. 20.450 UT (limiting magnitude = 19.1) and Feb 21.425 UT (limiting magnitude = 18.7). . We have checked in Minor Planets. Nothing is visible at the position of possible nova on the Digitized Sky Survey(POSS2/UKSTU) from 1986 Nov. 27 (limiting red mag 18.7) and 1993 Oct. 21(limiting infrared mag 17.9). the nearest star in M31 catalogue (http://www.lowell.edu/users/massey/lgsurvey.html) has position end figures 46s33, 52."0, distance 0."5, magnitudes V=21.8, B=22.8, R=21.7

2013 02 23.389

Mag.= 16.7, position end figures 46s.32, 50".5 observed by Toshihide Noguchi, Katori, Chiba-ken, Japan, from a stacked image (limit mag.= 17.5) exposed by each 30-s x eight 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_20130223.jpg.

2013 02 23.095

This possible nova in M31 was detected with 3 x 15 min images using a red filter Astrometry: RA 00 42 46.33 Dec +41 13 51.7 Photometry: 16.7 +/- 1.3 (note large error bars) (R for ref) These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information http://www.flickr.com/photos/43846774@N02/8511338971/