Discovery certificate for object 2016gmg
TNS Astronomical Transient Report No. 5440

Date Received (UTC): 2016-09-24 09:02:26
Sender: Wenxiong Li
Source Group: PTSS

Hanjie Tan (CCU), Wenxiong Li (THU), Zhijian Xu, Bin Li (PMO), Zesheng Yang (THU), Xiaofeng Wang (THU), Haibin Zhao (PMO), Lifan Wang (PMO), Jujia Zhang(YNAO) report/s the discovery of a new astronomical transient.

IAU Designation: SN 2016gmg
Discoverer internal name: PTSS-16opy
Coordinates (J2000): RA = 21:23:41.850 (320.924375) DEC = +33:06:52.56 (33.1146)
Discovery date: 2016-09-23 11:31:47 (JD=2457654.9804051)

Potential host galaxy: 2MASX J21234100+3307075
Host redshift: 0.049

Remarks: This possible supernova was discovered by the 1.04-m schmidt telescope at Xuyi Observatory during the PMO-Tsinghua Supernova Survey (PTSS). The transient is located 13" east and 14” south of the center of 2MASX J21234100+3307075.The absolute magnitude is -18m

Photometry

Discovery (first detection):
Discovery date: 2016-09-23 11:31:47
Flux: 18.8 VegaMag
Filter: r-Sloan
Instrument: STA1600
Telescope: Chinese Near Earth Object Survey Telescope

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2016gmg