TNS Astronomical Transient Report No. 250624 [ 2025TNSTR1250....1T ]
Date Received (UTC): 2025-04-03 07:25:31
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU) report/s the discovery of a new astronomical transient.
IAU Designation: SN 2025gnn
Discoverer internal name: ATLAS25dmo
Coordinates (J2000): RA = 10:43:37.087 (160.90453) DEC = +00:37:24.16 (0.623377142857)
Discovery date: 2025-04-02 02:47:11.040 (JD=2460767.6161)
Photometry
Discovery (first detection):
Discovery date: 2025-04-02 02:47:11.040
Flux: 18.918 ABMag
Filter: cyan-ATLAS
Instrument: ATLAS-04
Telescope: ATLAS El Sauce
Last non-detection:
Last non-detection date: 2025-03-30 21:36:56
Limiting flux: 19.28 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-03
Telescope: ATLAS Sutherland
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025gnn
Date Received (UTC): 2025-04-03 07:25:31
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU) report/s the discovery of a new astronomical transient.
IAU Designation: SN 2025gnn
Discoverer internal name: ATLAS25dmo
Coordinates (J2000): RA = 10:43:37.087 (160.90453) DEC = +00:37:24.16 (0.623377142857)
Discovery date: 2025-04-02 02:47:11.040 (JD=2460767.6161)
Photometry
Discovery (first detection):
Discovery date: 2025-04-02 02:47:11.040
Flux: 18.918 ABMag
Filter: cyan-ATLAS
Instrument: ATLAS-04
Telescope: ATLAS El Sauce
Last non-detection:
Last non-detection date: 2025-03-30 21:36:56
Limiting flux: 19.28 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-03
Telescope: ATLAS Sutherland
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025gnn