TNS Astronomical Transient Report No. 308147 [ 2026TNSTR2444....1S ]

Date Received (UTC): 2026-06-11 15:54:25
Date made public:
Sender: Krzysztof Stanek
Reporting Group: ASAS-SN     Discovery Data Source: ASAS-SN

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

IAU Designation: AT 2026oyp
Discoverer internal name: ASASSSN-26dt
Coordinates (J2000): RA = 00:50:45.142 (12.68809) DEC = -71:38:36.96 (-71.6436)
Discovery date: 2026-06-11 08:52:48.000 (JD=2461202.87)

Potential host galaxy: SMC

Remarks: Bright transient (g~10.5 mag) on the rise near the SMC, so possibly a classical Nova; matches to a known, faint CV Gaia DR3 4689290962169940224

Photometry

Discovery (first detection):
Discovery date: 2026-06-11 08:52:48.000
Flux: 10.5 ABMag
Filter: g-Sloan
Instrument: Cassius
Telescope: ASASSN-Cassius

Last non-detection:
Last non-detection date: 2026-06-08 08:52:48
Limiting flux: 17 ABMag
Filter: g-Sloan
Instrument: Cassius
Telescope: ASASSN-Cassius


Details of the new object can be viewed here: https://www.wis-tns.org/object/2026oyp