Discovery certificate for object 2019aca
TNS Astronomical Transient Report No. 29213 [ 2019TNSTR.139....1D ]

Date Received (UTC): 2019-01-25 14:03:22
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 2019aca
Discoverer internal name: Gaia19ahk
Coordinates (J2000): RA = 23:48:02.610 (357.010875) DEC = -16:31:12.00 (-16.52)
Discovery date: 2019-01-11 08:34:04 (JD=2458494.8569907)


Remarks: long term brightening of variable QSO B2345-167

Photometry

Discovery (first detection):
Discovery date: 2019-01-11 08:34:04
Flux: 15.35 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-06-25 01:40:48
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/2019aca