Discovery certificate for object 2018dde
TNS Astronomical Transient Report No. 19989 [ 2018TNSTR.930....1D ]

Date Received (UTC): 2018-07-05 15:45:38
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 2018dde
Discoverer internal name: Gaia18bsc
Coordinates (J2000): RA = 20:35:39.360 (308.914) DEC = +21:20:06.47 (21.335131)
Discovery date: 2018-07-04 05:51:21 (JD=2458303.7439931)


Remarks: Gaia source brightens by ~0.25 mags

Photometry

Discovery (first detection):
Discovery date: 2018-07-04 05:51:21
Flux: 19.03 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2018-04-22 14:48:28
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/2018dde