Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00431527+4122167

PNV J00431527+4122167   2016 01 15.4129*  00 43 15.27 +41 22 16.7  18.1 U  348E 368N  M31       N 0

2016 01 15.4129

Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report the discovery of a possible nova? .(mag.= 18.1) in M31 on seven 60-s unfiltered CCD frames taken around 2016 Jan. 15.41293 UT, ( limiting magnitude = 19.4 ) using a 0.50-m f/6.8 reflector (+FLI 1001E camera). as follows Nothing is visible at this location on our past frames taken on 2016 Jan. 03.431 UT (limiting magnitude = 19.2) and Jan 10.423 UT (limiting magnitude = 18.9). 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 15.22, 19."1, distance 2"4, magnitudes V=22.1, B=23.3, R=21.6

2016 01 15.79

Can you confirm the declination of your report? I see nothing at the quoted position but there is an object at 00 43 15.33, +41 20 16.6 (2000.), mag 17.5 (UCAC-4) which is exactly 2 arcmin S of your position. This object is currently bright and not present on DSS or SDSS. This was reported to "The Astronomer" magazine (UK) by George Carey in an image he took at 2016-01-14.78. The object is visible (faintly) on images taken on 2016 Jan 7 and 2015 Nov 27 but not on other images. Nick James.

2016 01 15.4129

Sorry, position is mistake. That is 2015-10b. Perhaps outburst. Koichi Nishiyama and Fujio Kabashima