Discovery of a Probable Nova in M31
ATel #9545; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), M. Wolf, H. Kucakova (Astronomical Institute, Charles U., Prague, Czech Republic)
on 25 Sep 2016; 06:20 UT
Credential Certification: Allen W. Shafter (ashafter@mail.sdsu.edu)
Subjects: Optical, Nova, Transient
Referred to by ATel #: 9557
We report the discovery of a probable slowly rising nova in M31 on a co-added 990-s R-band CCD frame taken on 2016 Sep. 24.872 UT with the 0.65-m telescope at Ondrejov. The new object is also visible on three prediscovery frames taken with the same instrumentation.
The object designated PNV J00425566+4119145 is located at R.A. = 0h42m55s.66, Decl. = +41o19'14".5 (equinox 2000.0), which is 127.8" east and 186.0" north of the center of M31 (see link to discovery image below).
The following R-band magnitudes were obtained using the 0.65-m telescope at Ondrejov:
2016 Sep. 15.078 UT, [21.4; 20.848, [19.6; 22.795, 19.6 ± 0.4 (prediscovery); 22.833, 19.9 ± 0.4 (prediscovery); 24.088, 19.7 ± 0.3 (prediscovery); 24.872, 19.1 ± 0.3; 24.969, 19.0 ± 0.25.
Discovery image
