TNS Astronomical Transient Report No. 266867 [ 2025TNSTR3304....1R ]

Date Received (UTC): 2025-08-21 08:22:47
Date made public:
Sender: BTSbot_bot
Reporting Group: ZTF     Discovery Data Source: ZTF

Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF report/s the discovery of a new astronomical transient.

IAU Designation: AT 2025usz
Discoverer internal name: ZTF25abjnifk
Coordinates (J2000): RA = 22:13:53.704 (333.4737663) DEC = +30:15:42.09 (30.261692)
Discovery date: 2025-08-18 07:18:31.003 (JD=2460905.8045255)


Remarks: Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).

Photometry

Discovery (first detection):
Discovery date: 2025-08-18 07:18:31.003
Flux: 17.3673 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-08-17 08:13:00
Limiting flux: 20.3071 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/2025usz