TNS Classification Report No. 23143 [ 2026TNSCR.957....1P ]

Date Received (UTC): 2026-03-07 16:29:43
Sender: Priscila Pessi
Group: None

P. Pessi (NCBJ), A. Cikota (NOIRLab/Gemini South), V.Firpo (NOIRLab/Gemini South), L. Magill (NOIRLab/Gemini South), K. Silva (NOIRLab/Gemini South), P. Candia (NOIRLab/Gemini South), S. Panda (NOIRLab/Gemini South), J. Font-Serra (NOIRLab/Gemini South), R. Angeloni (NOIRLab/Gemini South), V. Kalari (NOIRLab/Gemini South), C. Rodriguez (NOIRLab/Gemini South), J.-E. Heo (NOIRLab/Gemini South), E. Sabbi (NOIRLab), R. Cartier (University of Antofagasta), S. Cikota (FER Zagreb, CAHA) report/s a classification of object: SN 2025ahby

Type: SN II
Redshift: 0.038

Remarks: Best match to phase ~ 80d past peak. Redshift from host as reported in NED (https://ned.ipac.caltech.edu/) . The redshift from spectral matching is estimated to be 0.043, forcing the redshift to that of the host does not change the classification.

The following Classification spectrum was provided:

Obsdate: 2026-03-06 00:00:00
Instrument: GMOS-S
Telescope: Gemini South

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