Discovery certificate for object 2017kdu
TNS Astronomical Transient Report No. 34459 [ 2019TNSTR.714....1T ]

Date Received (UTC): 2019-05-06 19:06:44
Sender: Ms. Melina Thévenot
Source Group: None

Ine Theunissen report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017kdu
Coordinates (J2000): RA = 15:18:15.768 (229.5657) DEC = +12:29:11.76 (12.4866)
Discovery date: 2017-05-04 03:05:42 (JD=2457877.6289583)

Potential host galaxy: IC 1113
Host redshift: 0.035635

Remarks: The transient was first discovered by Ine Theunissen on the galaxy zoo website. Number 3 in this discussion https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1268/989034.

Photometry

Discovery (first detection):
Discovery date: 2017-05-04 03:05:42
Flux: 19.76 ABMag
Filter: z-Sloan
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Remarks: The Apparent Magnitude was calculated with APT and a reference star in Pan-STARRS (see also: http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ5cd0734b80cf&-out.add=.&-source=II/349/ps1&-c=229.566272300%20%2b12.502971150,eq=J2000,rs=2&-out.orig=o). An Absolute Magnitude of -16.16 was also calculated.

Last non-detection:
Archival info: SDSS

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