Discovery certificate for object 2018hdc
TNS Astronomical Transient Report No. 23368 [ 2018TNSTR1522....1D ]

Date Received (UTC): 2018-10-07 00:54:28
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 2018hdc
Discoverer internal name: Gaia18cww
Coordinates (J2000): RA = 17:19:00.150 (259.750625) DEC = -20:47:16.40 (-20.787889)
Discovery date: 2018-10-04 14:47:02.000 (JD=2458396.1159954)


Remarks: 1 mag drop in a red star near the Bulge

Photometry

Discovery (first detection):
Discovery date: 2018-10-04 14:47:02.000
Flux: 15.92 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2016-10-28 18:17:16
Limiting flux: 21.5 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft


Details of the new object can be viewed here: https://www.wis-tns.org/object/2018hdc