Discovery certificate for object 2019oky
TNS Astronomical Transient Report No. 44927 [ 2019TNSTR1589....1F ]

Date Received (UTC): 2019-08-23 20:07:02
Sender: ZTF (ALeRCE)
Source Group: ALeRCE

F. Forster on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.

IAU Designation: AT 2019oky
Discoverer internal name: ZTF19abrefoy
Coordinates (J2000): RA = 16:53:00.832 (253.2534655) DEC = +18:02:14.37 (18.0373256)
Discovery date: 2019-08-23 04:09:09 (JD=2458718.6730208)

Potential host galaxy: SDSS J165300.90+180216.6
Host redshift: 0.155

Remarks: Early SN candidate classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/vue/object/ZTF19abrefoy

Photometry

Discovery (first detection):
Discovery date: 2019-08-23 04:09:09
Flux: 19.9637 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-08-17 05:39:16
Limiting flux: 19.9733 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

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