Discovery certificate for object 2018ist
TNS Astronomical Transient Report No. 25247 [ 2018TNSTR1797....1D ]

Date Received (UTC): 2018-11-20 19:48:32
Sender: Gaia (Gaia_Bot1)
Source Group: GaiaAlerts

A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts team report/s the discovery of a new astronomical transient.

IAU Designation: AT 2018ist
Discoverer internal name: Gaia18dmn
Coordinates (J2000): RA = 19:29:45.430 (292.439292) DEC = +18:30:26.78 (18.507439)
Discovery date: 2018-11-18 10:24:57 (JD=2458440.9339931)


Remarks: erratic Galactic plane source dims by over 1 mag

Photometry

Discovery (first detection):
Discovery date: 2018-11-18 10:24:57
Flux: 19.75 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-11-29 13:30:43
Limiting flux: 21.5 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft


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