Discovery certificate for object 2017dfb
TNS Astronomical Transient Report No. 10885 [ 2017TNSTR.449....1S ]

Date Received (UTC): 2017-04-19 23:04:00
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 2017dfb
Discoverer internal name: ASASSN-17fd
Coordinates (J2000): RA = 15:39:05.038 (234.77099) DEC = +05:34:16.93 (5.57137)
Discovery date: 2017-04-19 12:00:00 (JD=2457863)

Potential host galaxy: ARK 481
Host redshift: 0.025955

Remarks: Close to the nucleus of a star-forming galaxy

Photometry

Discovery (first detection):
Discovery date: 2017-04-19 12:00:00
Flux: 16.5 VegaMag
Filter: V-Johnson
Instrument: Brutus
Telescope: ASASSN-Brutus

Last non-detection:
Last non-detection date: 2017-04-15 12:14:24
Limiting flux: 17.7 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/2017dfb