Discovery certificate for object 2020cll
TNS Astronomical Transient Report No. 61759 [ 2020TNSTR.488....1S ]

Date Received (UTC): 2020-02-14 01:22:48
Sender: Dr. Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: ZTF

R. Shirley, I. Perez-Fournon, C. Jimenez Angel, F. Poidevin, (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 OIR Lab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2020cll
Discoverer internal name: ZTF20aakctpn
Coordinates (J2000): RA = 15:05:25.404 (226.35585) DEC = +52:45:53.07 (52.764742)
Discovery date: 2020-01-27 11:50:07.000 (JD=2458875.9931366)

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


Discovery (first detection):
Discovery date: 2020-01-27 11:50:07.000
Flux: 20.681 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2020-01-24 13:16:27
Limiting flux: 20.488 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Details of the new object can be viewed here: