TNS Astronomical Transient Report No. 266862 [ 2025TNSTR3303....1S ]

Date Received (UTC): 2025-08-21 07:38:54
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: SN 2025usw
Discoverer internal name: ZTF25abkeyrv
Coordinates (J2000): RA = 18:27:30.099 (276.8754119) DEC = +36:06:21.71 (36.1060306)
Discovery date: 2025-08-21 05:09:04.999 (JD=2460908.7146412)



Photometry

Discovery (first detection):
Discovery date: 2025-08-21 05:09:04.999
Flux: 19.2699 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-08-16 07:30:55
Limiting flux: 21.1838 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/2025usw