Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00455967+4156221

PNV J00455967+4156221   2016 08 08.6280*  00 45 59.67 +41 56 22.1  18.6 U 2202E2414N  M31       N 0

2016 08 08.6280

Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report the discovery of a possible nova (mag.= 18.6) in M31 on seven 60-s unfiltered CCD frames taken around 2016 Aug. 08.62804 UT, ( limiting magnitude = 19.9 ) using a 0.50-m f/6.8 reflector (+FLI 1001E camera). as follows We report that this star locates 2204" east and 2414" north from the center of galaxy. Nothing is visible at this location on our past frames taken on 2016 Aug. 02.670 UT ( limiting magnitude = 19.7 ) and Aug. 05.732 UT ( limiting magnitude = 20.1 ). 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 19.6) and 1993 Oct. 21 (limiting infrared mag 19.2). the nearest star in M31 catalogue (http://www.lowell.edu/users/massey/lgsurvey.html) has position end figures 59s97, 22"7, distance 3"4, magnitudes V=23.0, B=23.0, R=22.0,

2016 08 09.075

Emmanuel Conseil confirms the presence of this transient, ~2 magnitudes brighter only 11 hours later : 16.5CV (UCAC4-V for ref) Image taken using Slooh space robotic telescope T2 (17" corrected Dall Kirkham F/6.8) at Mt Teide, Canary islands. Image available here : https://www.flickr.com/photos/econseil/28586963440/

2016 08 12.7776

K.Nishiyama and F.Kabashima observe 16.0 U mag（limitting mag 20.0） at 2016 Oct. 12.77756 UT