TNS Astronomical Transient Report No. 271257 [ 2025TNSTR3862....1S ]

Date Received (UTC): 2025-09-25 04:42:13
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 2025ymk
Discoverer internal name: ZTF25abtazbc
Coordinates (J2000): RA = 17:05:56.831 (256.4867955) DEC = +37:33:54.02 (37.5650052)
Discovery date: 2025-09-24 03:26:19.996 (JD=2460942.643287)



Photometry

Discovery (first detection):
Discovery date: 2025-09-24 03:26:19.996
Flux: 20.1441 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-09-20 05:28:26
Limiting flux: 19.7675 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/2025ymk