TNS Astronomical Transient Report No. 275351 [ 2025TNSTR4387....1R ]

Date Received (UTC): 2025-10-31 12:20:45
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: SN 2025acau
Discoverer internal name: ZTF25aamisyt
Coordinates (J2000): RA = 08:53:05.110 (133.2712916) DEC = -16:33:51.42 (-16.5642841)
Discovery date: 2025-10-26 11:31:48.996 (JD=2460974.9804282)


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: 2025-10-26 11:31:48.996
Flux: 18.3744 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-10-24 12:25:29
Limiting flux: 20.1897 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/2025acau