Discovery certificate for object 2019tws
TNS Astronomical Transient Report No. 51339 [ 2019TNSTR2238....1F ]

Date Received (UTC): 2019-11-01 16:32:31
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F. Forster, F.E. Bauer, 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, 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 2019tws
Discoverer internal name: ZTF19acmcdfo
Coordinates (J2000): RA = 08:33:39.612 (128.4150485) DEC = +51:49:32.29 (51.825635)
Discovery date: 2019-11-01 12:58:47.000 (JD=2458789.0408218)

Potential host galaxy: WISEA J083339.22+514929.6
Host redshift: 0.170655

Remarks: SN candidate classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19acmcdfo

Photometry

Discovery (first detection):
Discovery date: 2019-11-01 12:58:47.000
Flux: 20.1263 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-10-28 12:21:49
Limiting flux: 19.4763 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/2019tws