Discovery certificate for object 2018atf
TNS Astronomical Transient Report No. 17732 [ 2018TNSTR.474....1D ]

Date Received (UTC): 2018-04-11 12:36:34
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 2018atf
Discoverer internal name: Gaia18axe
Coordinates (J2000): RA = 21:53:50.240 (328.459333) DEC = -11:36:14.11 (-11.603919)
Discovery date: 2018-04-08 19:33:36 (JD=2458217.315)


Remarks: Gaia source brightens by 2 mags, aka blazar 3FGL J2154.0-1137

Photometry

Discovery (first detection):
Discovery date: 2018-04-08 19:33:36
Flux: 17.51 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-07-03 01:26:24
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/2018atf