TNS Astronomical Transient Report No. 246717 [ 2025TNSTR.895....1R ]

Date Received (UTC): 2025-03-05 07:09:41
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 2025dii
Discoverer internal name: ZTF25aainerh
Coordinates (J2000): RA = 11:06:43.892 (166.6828844) DEC = +66:51:16.88 (66.8546886)
Discovery date: 2025-03-05 05:09:46.998 (JD=2460739.7151273)


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: 2025-03-05 05:09:46.998
Flux: 18.2921 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-02-28 09:24:20
Limiting flux: 20.1305 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/2025dii