TNS Astronomical Transient Report No. 313034 [ 2026TNSTR2825....1S ]
Date Received (UTC): 2026-07-07 08:01:56
Date made public:
Sender: LVRA
Reporting Group: Lasair Discovery Data Source: Rubin
H. F. Stevance, K. W. Smith, S. J. Smartt (Oxford/QUB), R. D. Williams, G. P. Francis (Edinburgh), D. R. Young (QUB), A. Lawrence, T. M. Sloan (Edinburgh) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sef
Discoverer internal name: LSST-AP-DO-170591520506249586
Coordinates (J2000): RA = 20:41:56.794 (310.48664003881) DEC = -17:09:51.75 (-17.16437371988)
Discovery date: 2026-07-07 07:52:14.880 (JD=2461228.82795)
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:52:14.880
Flux: 22.2792 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sef
Date Received (UTC): 2026-07-07 08:01:56
Date made public:
Sender: LVRA
Reporting Group: Lasair Discovery Data Source: Rubin
H. F. Stevance, K. W. Smith, S. J. Smartt (Oxford/QUB), R. D. Williams, G. P. Francis (Edinburgh), D. R. Young (QUB), A. Lawrence, T. M. Sloan (Edinburgh) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sef
Discoverer internal name: LSST-AP-DO-170591520506249586
Coordinates (J2000): RA = 20:41:56.794 (310.48664003881) DEC = -17:09:51.75 (-17.16437371988)
Discovery date: 2026-07-07 07:52:14.880 (JD=2461228.82795)
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:52:14.880
Flux: 22.2792 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sef