TNS Astronomical Transient Report No. 307883 [ 2026TNSTR2404....1T ]

Date Received (UTC): 2026-06-09 19:46:01
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 2026oto
Discoverer internal name: BGEM J233116.63-350318.7
Coordinates (J2000): RA = 23:31:16.630 (352.819292) DEC = -35:03:18.75 (-35.055208)
Discovery date: 2026-05-04 09:47:01.000 (JD=2461164.9076505)



Photometry

Discovery (first detection):
Discovery date: 2026-05-04 09:47:01.000
Flux: 19.11 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam3
Telescope: BlackGEM- 3

Last non-detection:
Last non-detection date: 2025-11-03 03:21:36
Limiting flux: 19.29 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/2026oto