TNS Astronomical Transient Report No. 268570 [ 2025TNSTR3453....1P ]

Date Received (UTC): 2025-08-30 06:38:45
Date made public:
Sender: GOTO_bot
Reporting Group: GOTO     Discovery Data Source: GOTO

M. Pursiainen, G. Ramsay, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, D. O'Neill, on behalf of GOTO collaboration report/s the discovery of a new astronomical transient.

IAU Designation: SN 2025whv
Discoverer internal name: GOTO25gnw
Coordinates (J2000): RA = 23:20:30.518 (350.127159) DEC = +12:14:30.03 (12.241676)
Discovery date: 2025-08-28 23:50:06.432 (JD=2460916.493132)


Remarks: This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Svetoslav Alexandrov, Mayahuel Torres Guerrero, M.T. Mazzucato, Henryk Krawczyk, Íris Eduarda Forcel Roncada

Photometry

Discovery (first detection):
Discovery date: 2025-08-28 23:50:06.432
Flux: 19.8 ABMag
Filter: L-GOTO
Instrument: GOTO-1
Telescope: GOTO-North

Last non-detection:
Last non-detection date: 2025-08-27 23:50:53
Limiting flux: 20 ABMag
Filter: L-GOTO
Instrument: GOTO-1
Telescope: GOTO-North


Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2025whv