TNS Astronomical Transient Report No. 240413 [ 2025TNSTR..50....1R ]

Date Received (UTC): 2025-01-04 10:28:43
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: SN 2025ay
Discoverer internal name: ZTF25aaaprdb
Coordinates (J2000): RA = 09:37:12.468 (144.3019502) DEC = +38:05:37.98 (38.0938845)
Discovery date: 2025-01-04 06:12:26.997 (JD=2460679.7586458)


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: 2025-01-04 06:12:26.997
Flux: 18.772 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-01-03 09:55:05
Limiting flux: 19.5821 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/2025ay