Discovery certificate for object 2019cby
TNS Astronomical Transient Report No. 31122 [ 2019TNSTR.420....1D ]

Date Received (UTC): 2019-03-21 12:11:09
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 2019cby
Discoverer internal name: Gaia19bba
Coordinates (J2000): RA = 15:12:59.630 (228.248458) DEC = -45:32:33.65 (-45.542681)
Discovery date: 2019-03-20 09:48:57 (JD=2458562.9089931)


Remarks: erratic source brightens by ~ 2 mag over ~3 years

Photometry

Discovery (first detection):
Discovery date: 2019-03-20 09:48:57
Flux: 15.19 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2018-03-04 16:32:09
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/2019cby