Discovery certificate for object 2020afi
TNS Astronomical Transient Report No. 59086 [ 2020TNSTR.170....1F ]

Date Received (UTC): 2020-01-18 15:47:22
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F. Forster, G. Pignata, F.E. Bauer, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, E. Reyes, I. Reyes, P. Sanchez-Saez, C. Valenzuela, E. Castillo, D. Ruz-Mieres, D. Rodriguez-Mancini, F.E. Bauer, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.

IAU Designation: AT 2020afi
Discoverer internal name: ZTF20aaghrgv
Coordinates (J2000): RA = 13:31:35.081 (202.89617245) DEC = +40:17:48.90 (40.29691725)
Discovery date: 2020-01-18 12:58:55.000 (JD=2458867.0409144)

Potential host galaxy: SDSS J133135.11+401749.2
Host redshift: 0.338

Remarks: Early SN candidate (g-rise > 0.10+-0.01 mag/day, r-rise > 0.07+-0.01 mag/day) classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF20aaghrgv

Photometry

Discovery (first detection):
Discovery date: 2020-01-18 12:58:55.000
Flux: 19.847 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2020-01-14 11:35:28
Limiting flux: 19.6411 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2020afi