Discovery certificate for object 2017kfd
TNS Astronomical Transient Report No. 82917 [ 2020TNSTR2877....1L ]

Date Received (UTC): 2020-09-21 22:18:45
Sender: Ms. Ine Theunissen
Reporting Group: None     Discovery Data Source: None

Arnaud Lefebvre, Christine Macmillan, Ine Theunissen-Limpens report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017kfd
Coordinates (J2000): RA = 15:46:44.568 (236.6857) DEC = +28:11:56.76 (28.1991)
Discovery date: 2017-05-03 06:16:11.000 (JD=2457876.7612384)

Potential host galaxy: SDSS J154644.03+281154.8
Host redshift: 0.0763

Remarks: This transient was first observed by Arnaud Lefebvre and confirmed by Ine Theunissen on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/subjects/47216433. Christine Macmillan also took part in the discussion.

Photometry

Discovery (first detection):
Discovery date: 2017-05-03 06:16:11.000
Flux: 19.1 ABMag
Filter: R-Cousins
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Remarks: The r-band Apparent magnitude was calculated by Ine Theunissen using APT and reference star: SDSS J154641.71+281302.8 http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237662305124811017. The r-band Absolute magnitude of -18.53 was also calculated.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://www.wis-tns.org/object/2017kfd