TNS Astronomical Transient Report No. 265219 [ 2025TNSTR3101....1S ]

Date Received (UTC): 2025-08-07 15:35:09
Date made public:
Sender: Krzysztof Stanek
Reporting Group: ASAS-SN     Discovery Data Source: ASAS-SN

K. Z. Stanek, J. Callahan, for the ASAS-SN team report/s the discovery of a new astronomical transient.

IAU Designation: SN 2025tiz
Discoverer internal name: ASASSN-25di
Coordinates (J2000): RA = 12:27:26.897 (186.86207) DEC = -08:19:32.92 (-8.32581)
Discovery date: 2025-08-06 23:31:12.000 (JD=2460894.48)

Potential host galaxy: MRK 1327
Host redshift: 0.01024

Remarks: Present in two epochs, on the rise

Photometry

Discovery (first detection):
Discovery date: 2025-08-06 23:31:12.000
Flux: 16.3 ABMag
Filter: g-Sloan
Instrument: Cassius
Telescope: ASASSN-Cassius

Last non-detection:
Last non-detection date: 2025-07-28 00:00:00
Limiting flux: 18.1 ABMag
Filter: g-Sloan
Instrument: Cassius
Telescope: ASASSN-Cassius


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