Addendum to ATel #17764: M31N 2026-04c is likely the third recurrence of the known recurrent nova M31N 1960-12a
ATel #17765; K. Hornoch (Ondrejov), M. Myslivec (HVBO, Czech Republic), H. Kucakova (Ondrejov), A. W. Shafter (SDSU)
on 25 Apr 2026; 21:30 UT
Distributed as an Instant Email Notice Novae
Credential Certification: Allen W. Shafter (ashafter@sdsu.edu)
Subjects: Optical, Nova, Transient
Comparison of the position of the newly discovered M31 nova candidate M31N 2026-04c (ATel #17764) with those of previously reported novae in M31 reveals that 2026-04c is very likely the third reported recurrence (fourth known eruption) of the recurrent nova M31N 1960-12a. The other two reported recurrences are M31N 2013-05b and 2019-07a. Based on the last three observed eruptions, the likely recurrence time is of order 6.5 years. Additional photometric and spectroscopic observations to characterize the light curve and determine the spectroscopic type are strongly encouraged.
