Discovery certificate for object 2017keu
TNS Astronomical Transient Report No. 72343 [ 2020TNSTR1617....1R ]

Date Received (UTC): 2020-05-30 10:16:53
Sender: Mr. Richard Nowell
Reporting Group: None     Discovery Data Source: None

Sami Ruohonen report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017keu
Coordinates (J2000): RA = 08:24:28.248 (126.1177) DEC = +32:20:43.44 (32.3454)
Discovery date: 2017-02-03 07:54:29.000 (JD=2457787.8295023)

Potential host galaxy: WISEA J082428.29+322045.4
Host redshift: 0.12

Remarks: This transient was first observed by Sami Ruohonen on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1269/1203627?comment=2331206.

Photometry

Discovery (first detection):
Discovery date: 2017-02-03 07:54:29.000
Flux: 19.89 ABMag
Filter: R-Cousins
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Remarks: The r-band Apparent magnitude was calculated by Richard Nowell using APT and reference star: SDSS J082428.21+322128.8 https://skyserver.sdss.org/dr14/en/tools/explore/summary.aspx?ra=126.1175&dec=32.3580. The r-band Absolute magnitude of -18.74 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/2017keu