TNS Classification Report No. 22431 [ 2025TNSCR4641....1D ]

Date Received (UTC): 2025-11-18 20:11:20
Sender: Hrishav Das
Group: None

Hrishav Das (IIA), D.K. Sahu (IIA) report/s a classification of object: SN 2025adrr

Type: SN Ia
Redshift: 0.056

Remarks: We classify the supernova SN 2025adrr based on a spectrum obtained on JD 2460997.5 with the HFOSC instrument mounted on the 2 m Himalayan Chandra Telescope (HCT) at IAO, Hanle. Using the Supernova Identification tool (SNID), we find the best matches to a pre-maximum Type Ia SN with a redshift of ~ 0.056. The host-galaxy redshift, measured from the H-alpha emission line visible in the spectra, is z ~ 0.054.

The following Classification spectrum was provided:

Obsdate: 2025-11-17 23:13:07
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/2025adrr