Discovery certificate for object 2015cu
TNS Astronomical Transient Report No. 33004 [ 2019TNSTR.552....1T ]

Date Received (UTC): 2019-04-12 19:55:19
Sender: Ms. Melina Thévenot
Source Group: None

Melina Thévenot report/s the discovery of a new astronomical transient.

IAU Designation: AT 2015cu
Coordinates (J2000): RA = 10:04:28.695 (151.11956345) DEC = +72:34:05.43 (72.56817365)
Discovery date: 2015-01-06 11:54:34 (JD=2457028.9962269)

Potential host galaxy: 2MASX J10042625+7233589
Host redshift: 0.0481

Remarks: The transient was first discovered in an search for possible AGN ionized clouds (Voorwerpjes) for galaxy zoo researchers and was posted by on the galaxy zoo talk page here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1268/963755.

Photometry

Discovery (first detection):
Discovery date: 2015-01-06 11:54:34
Flux: 18.9627 ABMag
Filter: i-Sloan
Instrument: GPC1
Telescope: Pan-STARRS

Remarks: The i-band Apparent Magnitude was calculated by Melina Thévenot using APT and reference star: TYC 4389-1300-1 http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ5cb0d1252cb5&-out.add=.&-source=II/349/ps1&-c=151.191036900%20%2b72.534350760,eq=J2000,rs=2&-out.orig=o. An Absolute Magnitude of -17.60726999 was also calculated.

Last non-detection:
Archival info: DSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2015cu