TNS Astronomical Transient Report No. 258469 [ 2025TNSTR2215....1O ]

Date Received (UTC): 2025-06-14 12:36:08
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 2025nna
Discoverer internal name: GOTO25dmw
Coordinates (J2000): RA = 13:07:42.090 (196.925376) DEC = -33:33:21.92 (-33.556088)
Discovery date: 2025-06-14 09:27:29.376 (JD=2460840.89409)



Photometry

Discovery (first detection):
Discovery date: 2025-06-14 09:27:29.376
Flux: 19.53 ABMag
Filter: L-GOTO
Instrument: GOTO-4
Telescope: GOTO-South

Last non-detection:
Last non-detection date: 2025-05-23 08:38:49
Limiting flux: 19.7 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/2025nna