Recurrent Nova M31N 2008-12a: discovery of the 2025 eruption
ATel #17511; K. Itagaki (Itagaki Observatory), H. Naito (Nayoro Observatory), M. J. Darnley (LJMU), M. W. Healy-Kalesh (LJMU), A. W. Shafter (SDSU), K. L. Page (U. Leicester), on behalf of the 12a Collaboration
on 30 Nov 2025; 18:23 UT
Distributed as an Instant Email Notice Novae
Credential Certification: Allen W. Shafter (ashafter@sdsu.edu)
Subjects: Optical, Nova, Transient
We report the discovery of the predicted 2025 eruption of the remarkable recurrent M31 nova M31N 2008-12a
See ATels #5607, #6527, #7964, #9848, #11116, #12177, #13269, #14130, #15034, #15786, #16361, #16942, and references therein for earlier detections.
The nova was clearly detected on Nov. 30.3634 using 0.6-m telescope at Itagaki Observatory, Yamagata, Japan. The discovery magnitude (unfiltered) is 18.7. We will continue to monitor the nova light curve and strongly encourage additional follow-up observations.
