TNS Astronomical Transient Report No. 270447 [ 2025TNSTR3746....1S ]

Date Received (UTC): 2025-09-17 11:20:31
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 2025xum
Discoverer internal name: ZTF25abqzhzj
Coordinates (J2000): RA = 02:28:49.139 (37.2047479) DEC = +51:27:37.10 (51.4603065)
Discovery date: 2025-09-15 09:16:06.997 (JD=2460933.8861921)



Photometry

Discovery (first detection):
Discovery date: 2025-09-15 09:16:06.997
Flux: 19.7576 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-09-15 07:13:45
Limiting flux: 20.5441 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


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