Discovery certificate for object 2020chw
TNS Astronomical Transient Report No. 61632 [ 2020TNSTR.460....1M ]

Date Received (UTC): 2020-02-12 14:50:35
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 2020chw
Discoverer internal name: ZTF20aamllsp
Coordinates (J2000): RA = 07:58:49.696 (119.707067) DEC = -03:54:49.50 (-3.91375)
Discovery date: 2020-02-08 05:08:32.000 (JD=2458887.7142593)

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


Discovery (first detection):
Discovery date: 2020-02-08 05:08:32.000
Flux: 19.434 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2020-02-08 03:34:05
Limiting flux: 19.199 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Details of the new object can be viewed here: