TNS Astronomical Transient Report No. 272964 [ 2025TNSTR4088....1R ]

Date Received (UTC): 2025-10-12 04:14:13
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 2025aaak
Discoverer internal name: ZTF25abwnmgf
Coordinates (J2000): RA = 18:17:29.648 (274.3735353) DEC = +22:29:52.28 (22.4978564)
Discovery date: 2025-10-12 02:48:20.998 (JD=2460960.6169097)


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: 2025-10-12 02:48:20.998
Flux: 17.8058 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-10-09 03:57:50
Limiting flux: 19.6042 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/2025aaak