Discovery certificate for object 2019xhd
TNS Astronomical Transient Report No. 55264 [ 2019TNSTR2663....1F ]

Date Received (UTC): 2019-12-21 16:20:12
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 2019xhd
Discoverer internal name: ZTF19adaylfn
Coordinates (J2000): RA = 23:07:50.968 (346.9623654) DEC = +23:12:11.90 (23.2033051)
Discovery date: 2019-12-21 02:19:44.000 (JD=2458838.597037)

Potential host galaxy: SDSS J230751.14+231210.8
Host redshift: 0.071

Remarks: Early SN candidate (r-rise > 0.12+-0.02 mag/day) classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19adaylfn

Photometry

Discovery (first detection):
Discovery date: 2019-12-21 02:19:44.000
Flux: 19.343 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-12-18 02:55:51
Limiting flux: 19.5367 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://www.wis-tns.org/object/2019xhd