Discovery certificate for object 2018xy
TNS Astronomical Transient Report No. 17044 [ 2018TNSTR.256....1S ]

Date Received (UTC): 2018-02-22 03:53:02
Sender: Prof. Krzysztof Stanek
Source Group: ASAS-SN

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

IAU Designation: SN 2018xy
Discoverer internal name: ASASSN-18dk
Coordinates (J2000): RA = 09:16:22.063 (139.09193) DEC = +10:13:55.34 (10.23204)
Discovery date: 2018-02-21 03:36:00 (JD=2458170.65)

Potential host galaxy: CGCG 062-012
Host redshift: 0.030875

Remarks: Detection with several ASAS-SN telescopes

Photometry

Discovery (first detection):
Discovery date: 2018-02-21 03:36:00
Flux: 17.3 ABMag
Filter: g-Sloan
Instrument: Paczynski
Telescope: ASASSN-Paczynski

Last non-detection:
Last non-detection date: 2018-02-15 06:00:00
Limiting flux: 18.6 ABMag
Filter: g-Sloan
Instrument: Leavitt
Telescope: ASASSN-Leavitt


Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2018xy