TNS Astronomical Transient Report No. 99320 [ 2021TNSTR.437....1S ]

Date Received (UTC): 2021-02-12 14:43:08
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 2021css
Discoverer internal name: ASASSN-21bn
Coordinates (J2000): RA = 08:13:40.428 (123.41845) DEC = -67:49:23.20 (-67.82311)
Discovery date: 2021-02-12 00:57:36.000 (JD=2459257.54)


Remarks: Present in several epochs, in the TESS FoV, possible faint, uncatalogued host nearby

Photometry

Discovery (first detection):
Discovery date: 2021-02-12 00:57:36.000
Flux: 16.6 ABMag
Filter: g-Sloan
Instrument: Paczynski
Telescope: ASASSN-Paczynski

Last non-detection:
Last non-detection date: 2021-02-10 04:33:36
Limiting flux: 17.95 ABMag
Filter: g-Sloan
Instrument: Paczynski
Telescope: ASASSN-Paczynski


Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2021css