Discovery certificate for object 2019vbl
TNS Astronomical Transient Report No. 52888 [ 2019TNSTR2385....1B ]

Date Received (UTC): 2019-11-17 16:30:38
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F.E. Bauer, G. Pignata, F. Forster, 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 2019vbl
Discoverer internal name: ZTF19actfqhp
Coordinates (J2000): RA = 10:25:06.020 (156.275082) DEC = +17:16:09.38 (17.2692732)
Discovery date: 2019-11-17 12:08:53 (JD=2458805.006169)

Potential host galaxy: WISEA J102505.52+171612.3
Host redshift: 0.045955

Remarks: Early SN candidate (g-rise > 0.13+-0.01 mag/day, r-rise > 0.18+-0.02 mag/day) classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19actfqhp

Photometry

Discovery (first detection):
Discovery date: 2019-11-17 12:08:53
Flux: 18.9644 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-11-11 12:51:42
Limiting flux: 19.7413 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/2019vbl