TNS Astronomical Transient Report No. 256407 [ 2025TNSTR1931....1G ]

Date Received (UTC): 2025-05-24 14:56:09
Date made public:
Sender: BlackGEM_Bot1
Reporting Group: BlackGEM     Discovery Data Source: BlackGEM

P. Groot, H. Tranin, F. Stoppa, D. Pieterse, G. Ramsay, S. Faris, P. Vreeswijk, N. Blagorodnova, J. van Roestel, H. Wichern, S. Scaringi report/s the discovery of a new astronomical transient.

IAU Designation: AT 2025lso
Discoverer internal name: BGEM J231854.72-415648.6
Coordinates (J2000): RA = 23:18:54.728 (349.728033) DEC = -41:56:48.62 (-41.946839)
Discovery date: 2025-05-22 09:43:13.000 (JD=2460817.9050116)



Photometry

Discovery (first detection):
Discovery date: 2025-05-22 09:43:13.000
Flux: 19.79 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam2
Telescope: BlackGEM- 2

Last non-detection:
Last non-detection date: 2025-05-20 10:25:53
Limiting flux: 20.52 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam4
Telescope: BlackGEM- 4


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