Discovery certificate for object 2019bku
TNS Astronomical Transient Report No. 30446 [ 2019TNSTR.316....1D ]

Date Received (UTC): 2019-03-03 20:55:39
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 2019bku
Discoverer internal name: Gaia19aum
Coordinates (J2000): RA = 21:37:12.300 (324.30125) DEC = -54:36:31.72 (-54.608811)
Discovery date: 2019-03-01 12:00:00 (JD=2458544)


Remarks: AGN candidate 2XMM J213712.2-543630 fades by 1 mag in 14 months

Photometry

Discovery (first detection):
Discovery date: 2019-03-01 12:00:00
Flux: 19.08 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2018-01-01 00:56:09
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/2019bku