TNS Classification Report No. 21933 [ 2025TNSCR3484....1W ]
Date Received (UTC): 2025-08-31 08:54:32 Sender: David O'Neill
Group: GOTO
I. Worssam, M. Pursiainen, D. O'Neill, J. Lyman, T. Killestein, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, A. Kumar on behalf of GOTO collaboration report/s a classification of object: SN 2025whv
Type: SN Ia-91T-likeRedshift: 0.1
Remarks: Reasonable matches to SN Ia and SN Ia-91T-like at z~0.1. 91T-like matches are favoured owing to the template epochs being a closer approximation of the light curve (approaching peak), the inferred current absolute magnitude of M ~ -19.4 mag, and the relatively weak Si II.
The following Classification spectrum was provided:
Obsdate: 2025-08-31 03:54:08
Instrument: ALFOSC
Telescope: Nordic Optical Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025whv
Date Received (UTC): 2025-08-31 08:54:32 Sender: David O'Neill
Group: GOTO
I. Worssam, M. Pursiainen, D. O'Neill, J. Lyman, T. Killestein, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, A. Kumar on behalf of GOTO collaboration report/s a classification of object: SN 2025whv
Type: SN Ia-91T-likeRedshift: 0.1
Remarks: Reasonable matches to SN Ia and SN Ia-91T-like at z~0.1. 91T-like matches are favoured owing to the template epochs being a closer approximation of the light curve (approaching peak), the inferred current absolute magnitude of M ~ -19.4 mag, and the relatively weak Si II.
The following Classification spectrum was provided:
Obsdate: 2025-08-31 03:54:08
Instrument: ALFOSC
Telescope: Nordic Optical Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025whv