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Discovery of an Apparent Nova in M81

ATel #12187; K. Hornoch, H. Kucakova (Ondrejov), S. C. Williams (Lancaster), M. Henze (SDSU), G. Sala, J. Jose (UPC-IEEC), H. Meusinger (TLS), M. J. Darnley (LJMU), A. Kaur (PSU), D. H. Hartmann (Clemson), A. W. Shafter (SDSU)
on 8 Nov 2018; 00:58 UT
Credential Certification: Allen W. Shafter (ashafter@sdsu.edu)

Subjects: Optical, Nova, Transient

The M81 nova monitoring collaboration reports the discovery of an apparent nova in M81 on a co-added 1800-s unfiltered CCD frame taken on 2018 Nov. 6.186 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J09555246+6902009 is located at R.A. = 9h55m52s.46, Decl. = +69o02'00".9 (equinox 2000.0), which is 103.4" east and 114.2" south of the center of M81 (see link to discovery image below).

Here we list the observing dates and corresponding photometry:
 
  Date [UT]    |  Mag   | Err  | Filter  | Telescope 
 
2018-11-02.176 | <21.3  |      | C       | OND  
2018-11-06.186 |  20.0  | 0.2  | C       | OND  
2018-11-07.206 |  19.2  | 0.2  | C       | OND 
 
The OND 0.65-m is a reflecting telescope at the Ondrejov observatory operated jointly by the Astronomical Institute of ASCR and the Astronomical Institute of the Charles University of Prague, Czech Republic. It uses a Moravian Instruments G2-3200 CCD camera (with a Kodak KAF-3200ME sensor and standard BVRI photometric filters) mounted at the prime focus. The unfiltered OND photometry was calibrated against R-band comparison stars from Perelmuter & Racine (1995).

Discovery image