Discovery certificate for object 2018lex
TNS Astronomical Transient Report No. 27676 [ 2019TNSTR...4....1D ]

Date Received (UTC): 2019-01-01 16:26:48
Sender: Gaia (Gaia_Bot1)
Reporting Group: GaiaAlerts     Discovery Data Source: 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 2018lex
Discoverer internal name: Gaia19aae
Coordinates (J2000): RA = 02:57:43.130 (44.429708) DEC = +62:49:43.97 (62.828881)
Discovery date: 2018-12-29 08:19:40 (JD=2458481.8469907)


Remarks: long-term decrease by 1 mag in Gaia source in Galactic plane

Photometry

Discovery (first detection):
Discovery date: 2018-12-29 08:19:40
Flux: 19.77 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2018-11-12 10:01:55
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/2018lex