Pre-discovery detection of the nova candidate AT2018jib in M31
ATel #12261; A. Valcheva (Sofia University), A. Kostov (IA and NAO, BAS), M. Minev (Sofia University), E. Ovcharov (Sofia University), P. Nedialkov (Sofia University)
on 3 Dec 2018; 23:29 UT
Credential Certification: Evgeni Ovcharov (evgeni@phys.uni-sofia.bg)
Subjects: Optical, Nova, Transient
Referred to by ATel #: 12349
We report a pre-discovery detection of the M31 nova candidate AT2018jib on the images taken on 2018 Dec. 02.817 UT with the 50/70cm Schmidt telescope at NAO Rozhen, Bulgaria. The derived R magnitude from co-added 3x300 sec frames is 18.59 ± 0.09.
Additional BR magnitudes are also available:
2018 12 03.725 UT, R = 18.02 ± 0.07, 50/70cm Schmidt telescope
2018 12 03.736 UT, B = 17.92 ± 0.03, 50/70cm Schmidt telescope
This work was supported in part by the NSF Bulgaria grant DN18/10-11.12.2017 and Ministry of Education and Science of the Republic of Bulgaria, National RI Roadmap Project DO1-157/28.08.2018.