TNS Classification Report No. 21680 [ 2025TNSCR3032....1T ]

Date Received (UTC): 2025-08-01 07:05:36
Sender: Kenta Taguchi
Group: None

Kenta Taguchi (Kyoto University), Hiroyuki Maehara (National Astronomical Observatory of Japan) report/s a classification of object: AT 2025sro

Type: Nova

Remarks: Since our low-resolution spectrum shows Balmer lines having P Cygni profiles, we propose that this object is a nova in M31.

The following Classification spectrum was provided:

Obsdate: 2025-07-31 16:47:21
Instrument: Other
Telescope: Other

Remarks: A spectroscopic follow-up observation with KOOLS-IFU mounted on the 3.8-m Seimei telescope at Okayama Observatory of Kyoto University. The spectral resolution is ~ 500, and the wavelength coverage is 4100-8500 A.

Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025sro