Discovery certificate for object 2019vii
TNS Astronomical Transient Report No. 53134 [ 2019TNSTR2415....1H ]

Date Received (UTC): 2019-11-21 11:01:55
Sender: Gaia (Gaia_Bot1)
Reporting Group: GaiaAlerts     Discovery Data Source: GaiaAlerts

S.T. Hodgkin, E. Breedt, A. Delgado, D.L. Harrison, M. van Leeuwen, G. Rixon, T. Wevers, A. Yoldas (IoA Cambridge), N. Ihanec, K. Kruszyńska, K.A. Rybicki, Ł. Wyrzykowski (Warsaw University Astronomical Observatory), Z. Kostrzewa-Rutkowska (Leiden Observatory), D. Eappachen (SRON/RU), G. Marton (Konkoly Observatory), on behalf of the Gaia Alerts team report/s the discovery of a new astronomical transient.

IAU Designation: AT 2019vii
Discoverer internal name: Gaia19fem
Coordinates (J2000): RA = 20:37:27.190 (309.363292) DEC = -22:42:48.89 (-22.713581)
Discovery date: 2019-11-19 19:50:52 (JD=2458807.3269907)


Remarks: long-term decline of more than 1 mag in known QSO

Photometry

Discovery (first detection):
Discovery date: 2019-11-19 19:50:52
Flux: 19.42 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2019-10-19 00:28:48
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/2019vii