Discovery certificate for object 2017ejx
TNS Astronomical Transient Report No. 11781 [ 2017TNSTR.614....1S ]

Date Received (UTC): 2017-05-31 17:51:14
Sender: Prof. Krzysztof Stanek
Source Group: ASAS-SN

K. Z. Stanek, for the ASAS-SN team report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017ejx
Discoverer internal name: ASASSN-17he
Coordinates (J2000): RA = 09:45:48.607 (146.45253) DEC = -14:22:05.74 (-14.36826)
Discovery date: 2017-05-30 00:57:36 (JD=2457903.54)

Potential host galaxy: NGC 2993
Host redshift: 0.008106

Remarks: In several epochs and two chips, on the rise, nuclear source, so could also be a TDE

Photometry

Discovery (first detection):
Discovery date: 2017-05-30 00:57:36
Flux: 16.8 VegaMag
Filter: V-Johnson
Instrument: Cassius
Telescope: ASASSN-Cassius

Last non-detection:
Last non-detection date: 2017-05-22 01:40:48
Limiting flux: 17.6 VegaMag
Filter: V-Johnson
Instrument: Cassius
Telescope: ASASSN-Cassius


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