TNS Astronomical Transient Report No. 307888 [ 2026TNSTR2404....1T ]

Date Received (UTC): 2026-06-09 20:07:02
Date made public:
Sender: BlackGEM_Bot1
Reporting Group: BlackGEM     Discovery Data Source: BlackGEM

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

IAU Designation: AT 2026otr
Discoverer internal name: BGEM J094620.89+090124.0
Coordinates (J2000): RA = 09:46:20.889 (146.587038) DEC = +09:01:23.97 (9.023325)
Discovery date: 2026-05-18 23:07:45.000 (JD=2461179.4637153)



Photometry

Discovery (first detection):
Discovery date: 2026-05-18 23:07:45.000
Flux: 20.1 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam4
Telescope: BlackGEM- 4

Last non-detection:
Last non-detection date: 2026-05-11 23:27:10
Limiting flux: 20.79 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam3
Telescope: BlackGEM- 3


Details of the new object can be viewed here: https://www.wis-tns.org/object/2026otr