TNS Astronomical Transient Report No. 265652 [ 2025TNSTR3185....1S ]

Date Received (UTC): 2025-08-13 10:05:39
Date made public:
Sender: Fritz
Reporting Group: ZTF     Discovery Data Source: ZTF

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF report/s the discovery of a new astronomical transient.

IAU Designation: AT 2025tsm
Discoverer internal name: ZTF25abijuyu
Coordinates (J2000): RA = 18:10:16.456 (272.5685653) DEC = +37:57:21.03 (37.9558408)
Discovery date: 2025-07-31 06:42:39.997 (JD=2460887.7796296)



Photometry

Discovery (first detection):
Discovery date: 2025-07-31 06:42:39.997
Flux: 21.2473 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-07-31 05:13:04
Limiting flux: 20.7261 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


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