Discovery certificate for object 2019koi
TNS Astronomical Transient Report No. 40937 [ 2019TNSTR1156....1N ]

Date Received (UTC): 2019-07-05 13:43:46
Sender: ZTF (ZTF_AMPEL_COMPLETE)
Source Group: ZTF

J. Nordin, V. Brinnel, M. Giomi, J. van Santen (HU Berlin), A. Gal-Yam, O. Yaron, S. Schulze (Weizmann) on behalf of ZTF report/s the discovery of a new astronomical transient.

IAU Designation: AT 2019koi
Discoverer internal name: ZTF19abbyxst
Coordinates (J2000): RA = 13:48:54.557 (207.2273219) DEC = -19:51:19.79 (-19.8554968)
Discovery date: 2019-06-28 04:35:50 (JD=2458662.6915625)


Remarks: See arXiv:1904.05922 for selection criteria.

Photometry

Discovery (first detection):
Discovery date: 2019-06-28 04:35:50
Flux: 19.69 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2019-06-09 05:35:24
Limiting flux: 19.8125 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2019koi