Discovery certificate for object 2015dg
TNS Astronomical Transient Report No. 48411 [ 2019TNSTR1971....1T ]

Date Received (UTC): 2019-10-02 09:32:58
Sender: Mr. Richard Nowell
Reporting Group: None     Discovery Data Source: None

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

IAU Designation: AT 2015dg
Coordinates (J2000): RA = 11:54:14.088 (178.5587) DEC = +20:01:35.76 (20.0266)
Discovery date: 2015-03-29 04:16:19 (JD=2457110.6779977)

Potential host galaxy: KUG 1151+203
Host redshift: 0.020708

Remarks: This transient was first noticed by Ine Theunissen in a disussion started by Sylvia Beer (username Bluemagi) on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/subjects/35622291.

Photometry

Discovery (first detection):
Discovery date: 2015-03-29 04:16:19
Flux: 19.84 ABMag
Filter: z-Sloan
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Remarks: The z-band Apparent magnitude was taken from the DECaLS DR7 catalogue. A z-band Absolute magnitude of -14.97 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/2015dg