Discovery certificate for object 2018xi
TNS Astronomical Transient Report No. 17025 [ 2018TNSTR.249....1D ]

Date Received (UTC): 2018-02-20 18:03:18
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: SN 2018xi
Discoverer internal name: Gaia18alw
Coordinates (J2000): RA = 06:50:15.190 (102.563292) DEC = +27:08:24.14 (27.140039)
Discovery date: 2018-02-14 23:44:09 (JD=2458164.4889931)


Remarks: hostless blue transient, declining, GS-TEC predicts SN Ia

Photometry

Discovery (first detection):
Discovery date: 2018-02-14 23:44:09
Flux: 16.96 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-11-14 11:49:55
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/2018xi