Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00425895+4126279

PNV J00425895+4126279   2017 09 08.8600*  00 42 58.95 +41 26 27.9  17.0 U             M31       0 0

2017 09 09.892

George Carey (UK) reports his discovery of a possible nova in M31. The object is visible in series of six 600 seconds exposures taken with a 0.2m reflector on 2017-09-09. The object was also just detected on an image taken on 2017-09-08.86 but not on previous library images. Nick James confirms that there is an object at 00 42 58.96 +41 26 27.6 with R magnitude 17.1 (UCAC4-R, C11, FLI CCD) which does not appear on SDSS images. This image is http://www.nickdjames.com/novae/m31_20170909_2125_ndj.jpg.

2017 09 09.4407

This possible nova in M31 was also discovered on 2017 Sept. 9.4407 UT at 18.3 mag by Nick Choksi, WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) and reported as AT 2017gqw on 2017 Sept. 10.2576 UT. Quote: "The object is confirmed at Sep. 10.205 UT with mag ~17.2, which is about 1 mag brighter than the night before": https://wis-tns.weizmann.ac.il/object/2017gqw --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2017 09 09.9345

This possible nova in M31 was also discovered on 2017 Sept. 9.93448 UT at 18.3 mag by the MASTER-Tavrida auto-detection system and reported on 2017 Sept. 10.3375 UT (ATel #10726). Quote: "MASTER-Tavrida auto-detection system discovered OT source at (RA, Dec) = 00h 42m 59.00s +41d 26m 26.9s on 2017-09-09.93448 UT. The OT unfiltered magnitude is 18.3m (limit 19.1m) ...": http://www.astronomerstelegram.org/?read=10726 --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)