Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J00452804+4141168

TCP J00452804+4141168   2016 08 16.8090*  00 45 28.04 +41 41 16.8  18.1 U 1846E1508N  M31       N 0

2016 08 16.8090

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 Aug. 16.80897 UT, ( limiting magnitude = 20.1 ) using a 0.50-m f/6.8 reflector (+FLI 1001E camera). as follows We report that this star locates 1846" east and 1508" north from the center of galaxy. PN is being on 2016 Aug. 11.597 UT 19.2mag. (limiting magnitude = 19.4) and 12.781UT 18.8mag. ( limiting magnitude = 19.9 ) So, It may be slow Nova? 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 19.2) and 1993 Oct. 21 (limiting infrared mag 19.0). the nearest star in M31 catalogue (http://www.lowell.edu/users/massey/lgsurvey.html) has position end figures 27s65, 11"8, distance 6"6, magnitudes V=20.8, B=20.6, R=20.8,

2016 08 09.558

Images : http://www.k-itagaki.jp/images/m31-08c.jpg

2016 08 19.5

Hiroyuki Maehara(OAO, NAOJ, Japan) pointed out that this object is M31N2016-04a = MASTER OT J004528.12+414117.6 (ATel #8950, #9116).

2016 08 17.317

There is apparently no indication that M31N 2016-04a (= MASTER OT J004528.12+414117.6) faded below 19 mag since discovery on 2016 April 10 (ATels #8950, #9116, and private messages by Allen W. Shafter and Martin Henze). Very slow nova? --- Patrick Schmeer (Bischmisheim, Germany)