Discovery certificate for object 2020onc
TNS Astronomical Transient Report No. 76431 [ 2020TNSTR2103....1P ]

Date Received (UTC): 2020-07-12 00:14:23
Sender: Dr. Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: ZTF

F. Poidevin, I. Perez-Fournon, C. Jimenez Angel, R. Shirley (IAC & ULL), R. Marques-Chaves (CAB), S. Geier (GRANTECAN & IAC), Y. Shu (IoA), S. Rodney, J. Roberts-Pierel (Univ. of South Carolina), A. Bolton (NSF's NOIRLab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2020onc
Discoverer internal name: ZTF20abjerjh
Coordinates (J2000): RA = 18:25:13.060 (276.304417) DEC = +34:50:42.90 (34.84525)
Discovery date: 2020-07-01 08:55:04.000 (JD=2459031.8715741)

Remarks: Data were provided by the Zwicky Transient Facility ( and processed through the Lasair (, ALeRCE (, ANTARES (, and MARS ( brokers.


Discovery (first detection):
Discovery date: 2020-07-01 08:55:04.000
Flux: 20.527 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2020-07-01 07:39:56
Limiting flux: 20.145 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Details of the new object can be viewed here: