Discovery certificate for object 2018btm
TNS Astronomical Transient Report No. 18667 [ 2018TNSTR.661....1B ]

Date Received (UTC): 2018-05-18 21:22:01
Sender: Prof. Krzysztof Stanek
Reporting Group: ASAS-SN     Discovery Data Source: ASAS-SN

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

IAU Designation: SN 2018btm
Discoverer internal name: ASASSN-18kn
Coordinates (J2000): RA = 23:19:44.486 (349.935358) DEC = +22:30:08.63 (22.502397)
Discovery date: 2018-05-13 14:24:00.000 (JD=2458252.1)

Potential host galaxy: 2MASX J23194510+2230081
Host redshift: 0.039

Remarks: Confirmed by follow-up imaging

Photometry

Discovery (first detection):
Discovery date: 2018-05-13 14:24:00.000
Flux: 17.3 VegaMag
Filter: V-Johnson
Instrument: Brutus
Telescope: ASASSN-Brutus

Last non-detection:
Last non-detection date: 2018-05-05 11:02:24
Limiting flux: 17.2 ABMag
Filter: g-Sloan
Instrument: Payne-Gaposchkin
Telescope: ASASSN-Payne-Gaposchkin


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