TNS Classification Report No. 20978 [ 2025TNSCR1680....1C ]

Date Received (UTC): 2025-05-05 08:29:15
Sender: Panos Charalampopoulos
Group: None

Panos Charalampopoulos (UTU) report/s a classification of object: SN 2025izo

Type: SN Ia
Redshift: 0.056

Remarks: We report the classification of AT2025izo as a Ia supernova based on an optical spectrum obtained with the Nordic Optical Telescope on 2025-05-04 (i.e., MJD 60800.11). The transient is coincident with the nucleus of the host galaxy. Comparison with a library of supernovae spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), suggests AT2025izo is an around peak SN Ia at a redshift of z~0.056. We note that there is significant MW extinction (Av=0.535) making the ~ current absolute magnitude at that redshift be Mg = -19.2 (with an intrinsic g-r colour of ~ -0.25).

The following Classification spectrum was provided:

Obsdate: 2025-05-05 02:36:22
Instrument: ALFOSC
Telescope: Nordic Optical Telescope

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