TNS Astronomical Transient Report No. 308101

Date Received (UTC): 2026-06-11 11:14:21
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: AT 2026oxt
Discoverer internal name: ATLAS26hcx
Coordinates (J2000): RA = 16:00:10.377 (240.0432375) DEC = +22:09:10.94 (22.15304)
Discovery date: 2026-06-11 00:43:07.680 (JD=2461202.52995)



Photometry

Discovery (first detection):
Discovery date: 2026-06-11 00:43:07.680
Flux: 19.379 ABMag
Filter: wide-ATLAS
Instrument: ATLAS-05
Telescope: ATLAS Teide Tenerife

Last non-detection:
Last non-detection date: 2026-06-09 10:09:29
Limiting flux: 19.1 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/2026oxt