Discovery certificate for object 2020ksk
TNS Astronomical Transient Report No. 71605 [ 2020TNSTR1454....1M ]

Date Received (UTC): 2020-05-22 12:54:41
Sender: Dr. Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: ZTF

R. Marques-Chaves (CAB), I. Perez-Fournon, C. Jimenez Angel, F. Poidevin, R. Shirley (IAC & ULL), 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 2020ksk
Discoverer internal name: ZTF20abaroer
Coordinates (J2000): RA = 17:23:07.017 (260.779238) DEC = +64:30:56.20 (64.515611)
Discovery date: 2020-05-17 09:26:37.000 (JD=2458986.8934838)

Potential host galaxy: SDSS J172306.34+643059.0
Host redshift: 0.0820912

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


Discovery (first detection):
Discovery date: 2020-05-17 09:26:37.000
Flux: 21.187 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2020-05-17 07:19:25
Limiting flux: 20.59 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Details of the new object can be viewed here: