Discovery certificate for object 2020cow
TNS Astronomical Transient Report No. 61891 [ 2020TNSTR.511....1N ]

Date Received (UTC): 2020-02-15 08:57:51
Sender: ZTF (ZTF_AMPEL_COMPLETE)
Reporting Group: ZTF     Discovery Data Source: 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 2020cow
Discoverer internal name: ZTF20aallmis
Coordinates (J2000): RA = 08:37:37.064 (129.40443168571) DEC = -09:35:24.22 (-9.5900610714286)
Discovery date: 2020-02-02 06:00:02.000 (JD=2458881.7500347)


Remarks: See arXiv:1904.05922 for selection criteria.

Photometry

Discovery (first detection):
Discovery date: 2020-02-02 06:00:02.000
Flux: 19.92 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2020-01-30 06:06:33
Limiting flux: 19.7339 ABMag
Filter: g-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/2020cow