Discovery certificate for object 2012it
TNS Astronomical Transient Report No. 21229 [ 2018TNSTR1092....1S ]

Date Received (UTC): 2018-08-04 14:15:41
Sender: Ms. Lynn Seguin
Source Group: None

Lynn Seguin report/s the discovery of a new astronomical transient.

IAU Designation: AT 2012it
Coordinates (J2000): RA = 02:24:39.792 (36.1658) DEC = -01:06:16.56 (-1.1046)
Discovery date: 2012-11-16 02:22:27 (JD=2456247.5989236)

Potential host galaxy: SDSS J022439.42-010614.3
Host redshift: 0.068

Remarks: First reported by Galaxy Zoo volunteer Lynn Seguin on July 28, 2018. Additional verification provided by CeciliaB, A.Jonkeren and Rick Nowell. http://www.legacysurvey.org/viewer/cutouts/?ra=36.1657&dec=-1.1048&layer=decals-dr5 http://www.legacysurvey.org/viewer?ra=36.16427699381626&dec=-1.1039785347859754&zoom=15&layer=decals-dr5

Photometry

Discovery (first detection):
Discovery date: 2012-11-16 02:22:27
Flux: 19.19 ABMag
Filter: R-Cousins
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope

Remarks: Flux Values provided by R.Nowell. FITS file: decam 151716 N7 r decam/NonDECaLS/CP201211/c4d_121116_022227_ooi_r_a1.fits.fz GUIDE STAR: SDSS J022438.96-010543.6 http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237663782602604626 r-band mag. = 15.62 SN Coordinates: 36.1658 -1.1046 GS Coordinates: 36.162339154 -1.095461352 Using APT: SN Source Intensity: +25396 GS Source Intensity: +679836 mag target = mag reference – 2.5 * log (flux target / flux reference) mag target = 15.62 - 2.5 x log(25396/679836) mag target = 19.1890 https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1267/680499?comment=1168583&page=1

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2012it