Discovery certificate for object 2018gfc
TNS Astronomical Transient Report No. 22574 [ 2018TNSTR1362....1D ]

Date Received (UTC): 2018-09-12 09:02:46
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 2018gfc
Discoverer internal name: Gaia18cos
Coordinates (J2000): RA = 02:37:52.410 (39.468375) DEC = +28:48:09.00 (28.8025)
Discovery date: 2018-09-09 23:38:24.000 (JD=2458371.485)


Remarks: Long term brightness increase on blazar CSS111018:023752+284809

Photometry

Discovery (first detection):
Discovery date: 2018-09-09 23:38:24.000
Flux: 15.36 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-08-25 06:25:55
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/2018gfc