TNS Astronomical Transient Report No. 240481 [ 2025TNSTR..62....1R ]

Date Received (UTC): 2025-01-05 09:45:37
Date made public:
Sender: Fritz
Reporting Group: ZTF     Discovery Data Source: ZTF

Nabeel Rehemtulla (CIERA, NU), 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 2025ca
Discoverer internal name: ZTF25aaastwn
Coordinates (J2000): RA = 12:33:07.729 (188.2822049) DEC = +14:34:27.59 (14.5743319)
Discovery date: 2025-01-05 09:34:47.000 (JD=2460680.8991551)


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: 2025-01-05 09:34:47.000
Flux: 18.0018 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-01-03 09:38:00
Limiting flux: 19.1851 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


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