Discovery certificate for object 2021du
TNS Astronomical Transient Report No. 95450 [ 2021TNSTR..30....1T ]

Date Received (UTC): 2021-01-04 15:32:57
Sender: Mr. Mi Zhang
Reporting Group: XOSS     Discovery Data Source: XOSS

Hanjie Tan, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Observatory) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2021du
Discoverer internal name: XM30HT
Coordinates (J2000): RA = 05:53:57.510 (88.489625) DEC = +42:56:30.00 (42.941667)
Discovery date: 2021-01-03 19:19:35.000 (JD=2459218.3052662)


Remarks: Known variable star (UG) in VSX, ~0.5 mag rise in PS1 source.

Photometry

Discovery (first detection):
Discovery date: 2021-01-03 19:19:35.000
Flux: 17.56 ABMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: The transient was discovered on several 120-s survey images (limiting mag about 18.5) taken by Xing Gao using PAT at Xingming Observatory #3 (N88). Images can be found at: http://xjltp.china-vo.org/xm30ht.html

Last non-detection:
Archival info: Other
Remarks: The transient was discovered on several 120-s survey images (limiting mag about 18.5) taken by Xing Gao using PAT at Xingming Observatory #3 (N88). Images can be found at: http://xjltp.china-vo.org/xm30ht.html

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