Discovery certificate for object 2017ejf
TNS Astronomical Transient Report No. 11756 [ 2017TNSTR.610....1T ]

Date Received (UTC): 2017-05-29 03:02:48
Sender: Prof. Xiaofeng Wang
Source Group: PTSS

H. Tan (CCU), B. Li (PMO). W. Li , X. Wang (THU), Z. Xu, H. Zhao (PMO), L. Wang (PMO/TAMU), Z. Yang (THU), J. Zhang (YNAO) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017ejf
Discoverer internal name: PTSS-17tbt
Coordinates (J2000): RA = 16:57:52.600 (254.469167) DEC = +30:10:56.94 (30.182483)
Discovery date: 2017-05-28 18:14:24 (JD=2457902.26)

Potential host galaxy: 2MASX J16575232+3010568

Remarks: This possible supernova was discovered by the 1.04 m schmidt telescope at Xuyi Observatory during the PMO-Tsinghua Transient Survey (PTSS). The transient is located 3.6" west and 0.6" north of the center of galaxy 2MASX J16575232+3010568. The link of the discovery information at: http://www.cneost.org/ptss/findname.php?ptssname=PTSS-17tbt

Photometry

Discovery (first detection):
Discovery date: 2017-05-28 18:14:24
Flux: 19.26 VegaMag
Filter: i-Sloan
Instrument: STA1600
Telescope: Chinese Near Earth Object Survey Telescope

Last non-detection:
Archival info: DSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2017ejf