Discovery certificate for object 2018jsm
TNS Astronomical Transient Report No. 26195 [ 2018TNSTR1916....1H ]

Date Received (UTC): 2018-12-13 19:05:21
Sender: Dr. Xuhui HAN
Source Group: GWAC-ToP

Xuhui HAN, Jianyan WEI, Liping XIN, Jing WANG, Weikang Zheng report/s the discovery of a new astronomical transient.

IAU Designation: AT 2018jsm
Discoverer internal name: GWAC 181211A
Coordinates (J2000): RA = 01:48:23.360 (27.097333) DEC = -00:48:06.48 (-0.8018)
Discovery date: 2018-12-11 12:34:53 (JD=2458464.0242245)


Remarks: This source is detected by the Ground Wide Angle Cameras (GWAC) during their routine observations. It was not seen in the reference image (obtained at 2018-11-30T13:02:08). The position matches with a known SDSS source: SDSS J014823.30-004807.5 -- White Dwarf. The magnitude of SDSS: u (AB) 20.49, g (AB) 20.35, r (AB) 20.33, i (AB) 20.44, z (AB) 20.42

Photometry

Discovery (first detection):
Discovery date: 2018-12-11 12:34:53
Flux: 13.7 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: Ground Wide Angle Cameras (GWAC)

Last non-detection:
Last non-detection date: 2018-11-30 13:02:08
Limiting flux: 16.5 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: Ground Wide Angle Cameras (GWAC)

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2018jsm