TNS Astronomical Transient Report No. 301294 [ 2026TNSTR1798....1T ]
Date Received (UTC): 2026-04-24 08:41:08
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), 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, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (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 2026koi
Discoverer internal name: ATLAS26etk
Coordinates (J2000): RA = 17:21:51.547 (260.46478) DEC = +31:06:22.19 (31.1061633333)
Discovery date: 2026-04-24 01:33:12.672 (JD=2461154.56473)
Photometry
Discovery (first detection):
Discovery date: 2026-04-24 01:33:12.672
Flux: 19.758 ABMag
Filter: wide-ATLAS
Instrument: ATLAS-05
Telescope: ATLAS Teide Tenerife
Last non-detection:
Last non-detection date: 2026-04-23 12:14:03
Limiting flux: 19.57 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-02
Telescope: ATLAS Haleakala
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026koi
Date Received (UTC): 2026-04-24 08:41:08
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), 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, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (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 2026koi
Discoverer internal name: ATLAS26etk
Coordinates (J2000): RA = 17:21:51.547 (260.46478) DEC = +31:06:22.19 (31.1061633333)
Discovery date: 2026-04-24 01:33:12.672 (JD=2461154.56473)
Photometry
Discovery (first detection):
Discovery date: 2026-04-24 01:33:12.672
Flux: 19.758 ABMag
Filter: wide-ATLAS
Instrument: ATLAS-05
Telescope: ATLAS Teide Tenerife
Last non-detection:
Last non-detection date: 2026-04-23 12:14:03
Limiting flux: 19.57 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-02
Telescope: ATLAS Haleakala
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026koi