TNS Astronomical Transient Report No. 258414 [ 2025TNSTR2204....1O ]

Date Received (UTC): 2025-06-13 22:53:30
Date made public:
Sender: GOTO_bot
Reporting Group: GOTO     Discovery Data Source: GOTO

D. O'Neill, K. Ackley, M. Dyer, J. Lyman, 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, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration report/s the discovery of a new astronomical transient.

IAU Designation: SN 2025nlw
Discoverer internal name: GOTO25dme
Coordinates (J2000): RA = 01:04:22.375 (16.093231) DEC = -16:44:28.23 (-16.741176)
Discovery date: 2025-06-13 18:15:36.576 (JD=2460840.260838)


Remarks: This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Henryk Krawczyk, Jason Alarcon, Cledison Marcos da Silva, Ciro Sirio Perrella, Virgilio Gonano

Photometry

Discovery (first detection):
Discovery date: 2025-06-13 18:15:36.576
Flux: 18.42 ABMag
Filter: L-GOTO
Instrument: GOTO-3
Telescope: GOTO-South

Last non-detection:
Last non-detection date: 2025-01-09 11:26:49
Limiting flux: 17.4 ABMag
Filter: L-GOTO
Instrument: GOTO-4
Telescope: GOTO-South


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