Discovery certificate for object 2019tbf
TNS Astronomical Transient Report No. 49913 [ 2019TNSTR2154....1F ]

Date Received (UTC): 2019-10-23 09:20:55
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F. Forster, G. Pignata, 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 2019tbf
Discoverer internal name: ZTF19acglcvf
Coordinates (J2000): RA = 23:38:39.110 (354.6629576) DEC = +14:22:20.73 (14.3724255)
Discovery date: 2019-10-21 04:53:41.000 (JD=2458777.7039468)

Potential host galaxy: WISEA J233838.91+142218.3
Host redshift: 0.137573

Remarks: SN candidate classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19acglcvf

Photometry

Discovery (first detection):
Discovery date: 2019-10-21 04:53:41.000
Flux: 20.4409 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-10-15 06:28:15
Limiting flux: 19.2861 ABMag
Filter: r-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/2019tbf