Discovery certificate for object 2019tdr
TNS Astronomical Transient Report No. 50015 [ 2019TNSTR2154....1F ]

Date Received (UTC): 2019-10-23 16:03:53
Sender: ZTF (ALeRCE)
Source Group: ALeRCE

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 2019tdr
Discoverer internal name: ZTF19achsqtz
Coordinates (J2000): RA = 05:27:03.587 (81.7649465) DEC = -02:03:49.25 (-2.0636797)
Discovery date: 2019-10-23 11:13:22 (JD=2458779.9676157)

Potential host galaxy: WISEA J052703.58-020348.9

Remarks: Early SN candidate (g-rise > 0.04 mag/day) classified by ALeRCE using the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF19achsqtz

Photometry

Discovery (first detection):
Discovery date: 2019-10-23 11:13:22
Flux: 19.9199 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2019-10-16 12:31:58
Limiting flux: 19.3126 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/2019tdr