TNS Astronomical Transient Report No. 271962 [ 2025TNSTR3927....1H ]

Date Received (UTC): 2025-09-30 21:01:33
Date made public:
Sender: GW-MMADS_bot
Reporting Group: GW-MMADS     Discovery Data Source: GW-MMADS

Xander J. Hall (CMU), Tomás Cabrera (CMU), Lei Hu (CMU), Antonella Palmese (CMU), Igor Andreoni (UMD), Brendan O’Connor (CMU), Robert Stein (Caltech), Michael Coughlin (UMN), Theo Jegou Du Laz (Caltech), Keerthi Kunnumkai (CMU), on behalf of GW-MMADS report/s the discovery of a new astronomical transient.

IAU Designation: AT 2025zao
Discoverer internal name: T202509290515250m511451
Coordinates (J2000): RA = 05:15:25.024 (78.854265518826) DEC = -51:14:51.14 (-51.247537847935)
Discovery date: 2025-09-29 07:18:43.488 (JD=2460947.8046732)



Photometry

Discovery (first detection):
Discovery date: 2025-09-29 07:18:43.488
Flux: 21.0635 ABMag
Filter: r-Sloan
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Last non-detection:
Archival info: Other
Remarks: DECam Legacy Survey

Details of the new object can be viewed here: https://www.wis-tns.org/object/2025zao