Discovery certificate for object 2017xy
TNS Astronomical Transient Report No. 8391 [ 2017TNSTR.125....1K ]

Date Received (UTC): 2017-01-29 21:08:56
Sender: Prof. Krzysztof Stanek
Reporting Group: ASAS-SN     Discovery Data Source: ASAS-SN

G. Krannich, K. Z. Stanek, for the ASAS-SN team report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017xy
Discoverer internal name: ASASSN-17br
Coordinates (J2000): RA = 15:52:00.346 (238.00144) DEC = +66:18:53.17 (66.31477)
Discovery date: 2017-01-29 14:52:48 (JD=2457783.12)

Potential host galaxy: GALEXASC J155200.16+661851.6

Remarks: In several epochs, emerged from "behind the Sun", matches to an uncatalogued, blue host galaxy clearly resolved in PS-1 images

Photometry

Discovery (first detection):
Discovery date: 2017-01-29 14:52:48
Flux: 16.7 VegaMag
Filter: V-Johnson
Instrument: Brutus
Telescope: ASASSN-Brutus

Last non-detection:
Last non-detection date: 2016-09-10 06:00:00
Limiting flux: 17.6 VegaMag
Filter: V-Johnson
Instrument: Brutus
Telescope: ASASSN-Brutus


Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2017xy