Discovery certificate for object 2004iu
TNS Astronomical Transient Report No. 21972 [ 2018TNSTR1276....1G ]

Date Received (UTC): 2018-08-29 20:07:29
Date made public: 2018-09-02
Sender: Dr. James Guillochon
Source Group: None

James Guillochon, Jorge Stockler de Moraes, Matt Nicholl, Daniel J. Patnaude, Katie Auchettl, Aaron J. Barth, Luis C. Ho, Zhao-Yu Li report/s the discovery of a new astronomical transient.

IAU Designation: AT 2004iu
Discoverer internal name: CGS2004A
Coordinates (J2000): RA = 05:17:11.530 (79.298042) DEC = -64:57:31.60 (-64.958778)
Discovery date: 2004-01-20 00:00:00 (JD=2453024.5)

Potential host galaxy: NGC 1892
Host redshift: 0.00353

Remarks: Transient was discovered by comparing archival CGS imaging from 2004 to image collected by Jorge Stockler de Moraes on 2017-01-28. Verified to not have been detected in earlier HST imaging (2001-09-22) and in a recently collected Magellan image (2018-08-06).

Photometry

Discovery (first detection):
Discovery date: 2004-01-20 00:00:00
Flux: 14.8 VegaMag
Filter: B-Johnson
Instrument: Other
Telescope: Other

Remarks: 2048x2048 Tek#5 CCD on 2.5m duPont telescope at Las Campanas Observatory as part of Carnegie-Irvine Galaxy Survey.

Last non-detection:
Last non-detection date: 2001-09-21 00:00:00
Limiting flux: 23 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other

Remarks: No source detected at position with HST/WFPC2 imaging in F450W and F814W.

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2004iu