Discovery certificate for object 2015dn
TNS Astronomical Transient Report No. 90894 [ 2020TNSTR3592....1T ]

Date Received (UTC): 2020-11-28 11:22:15
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 2015dn
Coordinates (J2000): RA = 11:27:43.790 (171.932459) DEC = +24:00:23.54 (24.006538)
Discovery date: 2015-03-29 03:26:29.000 (JD=2457110.6433912)

Potential host galaxy: WISEA J112743.29+240019.9
Host redshift: 0.102798

Remarks: This transient was discovered by Ine Theunissen using the Galaxy Zoo website here: https://www.zooniverse.org/projects/mikewalmsley/galaxy-zoo-mobile/talk/subjects/40274468.

Photometry

Discovery (first detection):
Discovery date: 2015-03-29 03:26:29.000
Flux: 23.04 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 catalog. The z-band Absolute magnitude of -15.37 was also calculated.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://www.wis-tns.org/object/2015dn