TNS Astronomical Transient Report No. 308095

Date Received (UTC): 2026-06-11 11:05:37
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 2026oxn
Discoverer internal name: ATLAS26hco
Coordinates (J2000): RA = 12:22:13.435 (185.55598) DEC = +27:24:59.84 (27.4166233333)
Discovery date: 2026-06-10 22:35:10.176 (JD=2461202.44109)



Photometry

Discovery (first detection):
Discovery date: 2026-06-10 22:35:10.176
Flux: 19.381 ABMag
Filter: wide-ATLAS
Instrument: ATLAS-05
Telescope: ATLAS Teide Tenerife

Last non-detection:
Last non-detection date: 2026-06-09 08:00:16
Limiting flux: 19.24 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/2026oxn