Discovery of a Probable Nova in M81
ATel #4980; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), H. Kucakova (Astronomical Institute, Charles U., Prague, Czech Republic)
on 15 Apr 2013; 17:50 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)
Subjects: Optical, Nova, Transient
Referred to by ATel #: 5015
We report the discovery of a probable nova in M81 on a co-added 2610-s unfiltered CCD frame taken on 2013 Apr. 12.832 UT with the 0.65-m telescope at Ondrejov.
The new object designated PNV J09554503+6902369 is located at R.A. = 9h55m45s.03, Decl. = +69o02'36".9 (equinox 2000.0), which is 63.6" east and 78.2" south of the center of M81 (see link to discovery image below).
The PNV J09554503+6902369 is not present on images taken with the 2.5-m Isaac Newton Telescope + WFC at La Palma on Apr. 5.946 UT (ATel #4968) down to limiting magnitudes as faint as H-alpha = 21.9, R = 22.2, and I = 21.8.
The following unfiltered magnitudes were obtained using the 0.65-m telescope at Ondrejov (R-band magnitudes used from comparison stars):
2013 Mar. 6.164 UT, [21.5; 16.787, [21.4; Apr. 12.832, 20.0 +/- 0.2.
Discovery image
