Discovery certificate for object 2018sf
TNS Astronomical Transient Report No. 16872 [ 2018TNSTR.199....1D ]

Date Received (UTC): 2018-02-12 11:45:54
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 2018sf
Discoverer internal name: Gaia18ajj
Coordinates (J2000): RA = 14:23:22.910 (215.845458) DEC = -61:10:16.03 (-61.171119)
Discovery date: 2018-02-05 23:05:16 (JD=2458155.4619907)


Remarks: red star fades by >0.8 mag, very red in WISE, candidate YSO

Photometry

Discovery (first detection):
Discovery date: 2018-02-05 23:05:16
Flux: 16.57 ABMag
Filter: G-Gaia
Instrument: Gaia-photometric
Telescope: Gaia Spacecraft

Last non-detection:
Last non-detection date: 2017-09-13 02:49:55
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/2018sf