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Photometric Observations of M31N 2008-12a During its Recent Eruption

ATel #9864; A. W. Shafter, J. Horst, A. Igarashi, T. Johnson (SDSU), on behalf of a larger collaboration
on 15 Dec 2016; 00:33 UT
Credential Certification: Allen W. Shafter (ashafter@mail.sdsu.edu)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 9865, 9872, 9874, 9885, 9891, 9906, 9907

The remarkable M31 recurrent nova with an unusually short recurrence time, M31N 2008-12a, is undergoing its 9th recorded outburst since December 2008 (e.g., see ATel #9848). Here, we report photometric measurements of the current eruption obtained with a 2048^2 CCD imager at the Cassegrain focus of the 40-inch reflector at San Diego State's Mount Laguna Observatory.

 
 
     UT DATE          FILTER                 MAGNITUDE 
 
2016 Dec. 13.097        B                  18.50 +/- 0.10 
2016 Dec. 13.112        V                  18.35 +/- 0.08 
2016 Dec. 13.125        R                  17.97 +/- 0.05 
2016 Dec. 13.140        I                  17.76 +/- 0.05 
2016 Dec. 13.204        R                  18.00 +/- 0.05 
2016 Dec. 13.283        I                  17.85 +/- 0.05 
2016 Dec. 13.289        B                  18.65 +/- 0.10 
2016 Dec. 13.297        V                  18.60 +/- 0.08 
 
2016 Dec. 14.088        R                  18.57 +/- 0.05 
2016 Dec. 14.105        I                  18.56 +/- 0.08 
2016 Dec. 14.115        V                  19.20 +/- 0.10 
2016 Dec. 14.129        B                  19.37 +/- 0.10