Discovery certificate for object 2012iv
TNS Astronomical Transient Report No. 45047 [ 2019TNSTR1617....1K ]

Date Received (UTC): 2019-08-25 09:57:16
Sender: Mr. Richard Nowell
Source Group: None

Marco A. Kovic report/s the discovery of a new astronomical transient.

IAU Designation: AT 2012iv
Coordinates (J2000): RA = 13:11:51.528 (197.9647) DEC = -00:21:21.24 (-0.3559)
Discovery date: 2012-12-22 20:04:35 (JD=2456284.3365162)

Potential host galaxy: SDSS J131151.45-002120.4
Host redshift: 0.086164

Remarks: This transient was first noticed by Marco Kovic on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/subjects/32410460. Christine Macmillan and CeciliaB also took part in the discussion. The transient was originally seen when using the DECaLS browser, but an earlier Pan-STARRS image was found.

Photometry

Discovery (first detection):
Discovery date: 2012-12-22 20:04:35
Flux: 19.88 ABMag
Filter: i-Sloan
Instrument: GPC1
Telescope: Pan-STARRS

Remarks: The i-band Apparent magnitude was calculated by Richard Nowell using APT and reference star: SDSS J131154.21-002048.3 http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237648704046563459. An i-band Absolute magnitude of -18.01 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/2012iv