TNS Classification Report No. 22221 [ 2025TNSCR4139....1D ]

Date Received (UTC): 2025-10-15 08:56:24
Sender: Hrishav Das
Group: None

Hrishav Das (IIA), Avinash Singh (Stockholm University), G.C. Anupama (IIA), D.K. Sahu (IIA) report/s a classification of object: SN 2025aada

Type: SN
Redshift: 0.042

Remarks: We classify SN 2025aada as a young SN based on follow-up spectra obtained on JD 2460962.3 with the 2 m HCT at IAO, Hanle. The source is non-nuclear, and the spectrum exhibits a blue continuum with a narrow Halpha emission feature, likely originating from the bright host galaxy at a redshift of z ~ 0.042. The source has an absolute magnitude of ~ –17 mag, based on the latest reported photometry, consistent with an early phase SN. Spectral cross-matching with GELATO indicates the best match with Type II SN 1999gi at approximately 3.8 days after explosion, although the Balmer emission features are less prominent in our spectrum.

The following Classification spectrum was provided:

Obsdate: 2025-10-13 19:07:11
Instrument: HFOSC
Telescope: The 2-m Himalayan Chandra Telescope (IAO)

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