Discovery certificate for object 2009oe
TNS Astronomical Transient Report No. 18968 [ 2018TNSTR.720....1G ]

Date Received (UTC): 2018-05-29 20:02:56
Sender: Mr. Richard Nowell
Source Group: None

B. Goodwin, R. Nowell, A. Jonkeren, S. Beer, E. Siegel report/s the discovery of a new astronomical transient.

IAU Designation: AT 2009oe
Coordinates (J2000): RA = 02:06:53.232 (31.7218) DEC = -00:31:23.16 (-0.5231)
Discovery date: 2009-09-16 09:33:47 (JD=2455090.8984606)

Potential host galaxy: IC 1781
Host redshift: 0.043

Remarks: This transient was found in the Galaxy Zoo website discussion by more than one participant. Brian L. Goodwin initiated the discussion at the link below. Participants were: Rick Nowell, A.F. Jonkeren, @bluemagi (Alf), @elizabeth_s . This is a link to that discussion: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/subjects/21666161 . The link to the DECaLS/SDSS browser where the transient is visible: http://www.legacysurvey.org/viewer?ra=31.7218&dec=-0.5231&zoom=16&layer=sdss2 Hide Classification Reportings

Photometry

Discovery (first detection):
Discovery date: 2009-09-16 09:33:47
Flux: 18.06 ABMag
Filter: r-Sloan
Instrument: SDSS-Spec
Telescope: Sloan Digital Sky Survey

Remarks: The magnitude of 18.06 was calculated by using APT. The star SDSS J020650.63-003005.2 was used to get an r-band reference, using the SDSS photometric details. The flux values I calculated are: Star's r-band flux +298.53, Object's r-band flux +55.998 . Star's link: http://cas.sdss.org/dr9/en/tools/explore/obj.asp?ra=31.7110&dec=-0.5015

Last non-detection:
Archival info: SDSS
Remarks: The last SDSS r-band image that I can find is from November 2004: DATE-OBS= '2004-11-10' TAIHMS = '06:39:48.04'

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2009oe