Discovery certificate for object 2019xby
TNS Astronomical Transient Report No. 55032 [ 2019TNSTR2642....1F ]

Date Received (UTC): 2019-12-19 16:00:58
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, 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 2019xby
Discoverer internal name: ZTF19adajcnc
Coordinates (J2000): RA = 08:31:51.599 (127.9649974) DEC = +48:58:42.61 (48.9785018)
Discovery date: 2019-12-19 11:51:18.000 (JD=2458836.9939583)

Potential host galaxy: WISEA J083151.48+485843.6
Host redshift: 0.15029

Remarks: SN candidate classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19adajcnc

Photometry

Discovery (first detection):
Discovery date: 2019-12-19 11:51:18.000
Flux: 20.26 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-12-17 12:26:37
Limiting flux: 19.1006 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/2019xby