TNS Classification Report No. 22428 [ 2025TNSCR4642....1W ]

Date Received (UTC): 2025-11-18 12:50:23
Sender: Jacob Wise
Group: ZTF

Jacob Wise (LJMU), Steve Schulze (CIERA), Jesper Sollerman (OKC) report/s a classification of object: SN 2025zsz

Type: SLSN-I
Redshift: 0.1745

Remarks: Spectrum is well-fit to template spectra from previously classified SLSN-I, with a particularly good match to SN 2011ke. Redshift of z = 0.1745 from host galaxy H-alpha emission. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).

The following Classification spectrum was provided:

Obsdate: 2025-11-16 22:23:54
Instrument: ALFOSC
Telescope: Nordic Optical Telescope

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