Discovery certificate for object 2017gsm
TNS Astronomical Transient Report No. 13627 [ 2017TNSTR1005....1X ]

Date Received (UTC): 2017-09-15 06:42:25
Sender: Wenxiong Li
Source Group: PTSS

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

IAU Designation: AT 2017gsm
Discoverer internal name: PTSS-17wje
Coordinates (J2000): RA = 03:02:33.730 (45.640542) DEC = +02:11:35.33 (2.193147)
Discovery date: 2017-09-14 19:18:31 (JD=2458011.3045255)

Potential host galaxy: UGC 02501
Host redshift: 0.017

Remarks: This supernova was discovered by the 1.04m Schmidt telescope at Xuyi Observatory during the PMO-Tsinghua Transient Survey(PTSS).The transient is located 0.0'' east and 4” south of the centre of UGC 02501. The link of the discovery information at: http://www.cneost.org/ptss/findname.php?ptssname=PTSS-17wje

Photometry

Discovery (first detection):
Discovery date: 2017-09-14 19:18:31
Flux: 18.3 VegaMag
Filter: i-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/2017gsm