TNS Astronomical Transient Report No. 263235 [ 2025TNSTR2799....1G ]
Date Received (UTC): 2025-07-21 06:45:03
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: SN 2025rtk
Discoverer internal name: BGEM J201505.09-705933.8
Coordinates (J2000): RA = 20:15:05.100 (303.77125) DEC = -70:59:33.89 (-70.992747)
Discovery date: 2025-07-20 03:04:32.000 (JD=2460876.6281481)
Photometry
Discovery (first detection):
Discovery date: 2025-07-20 03:04:32.000
Flux: 18.82 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam2
Telescope: BlackGEM- 2
Last non-detection:
Last non-detection date: 2025-07-19 03:08:52
Limiting flux: 21.11 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam2
Telescope: BlackGEM- 2
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025rtk
Date Received (UTC): 2025-07-21 06:45:03
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: SN 2025rtk
Discoverer internal name: BGEM J201505.09-705933.8
Coordinates (J2000): RA = 20:15:05.100 (303.77125) DEC = -70:59:33.89 (-70.992747)
Discovery date: 2025-07-20 03:04:32.000 (JD=2460876.6281481)
Photometry
Discovery (first detection):
Discovery date: 2025-07-20 03:04:32.000
Flux: 18.82 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam2
Telescope: BlackGEM- 2
Last non-detection:
Last non-detection date: 2025-07-19 03:08:52
Limiting flux: 21.11 ABMag
Filter: BG-q-BlackGem
Instrument: BlackGEM-Cam2
Telescope: BlackGEM- 2
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025rtk