Discovery certificate for object 2021gkr
TNS Astronomical Transient Report No. 103177 [ 2021TNSTR.834....1M ]

Date Received (UTC): 2021-03-20 00:09:16
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, L. Hernandez-Garcia, L. Galbany, E. Camacho, J. Silva-Farfan, A. Mourao, 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 2021gkr
Discoverer internal name: ZTF21aaqbddv
Coordinates (J2000): RA = 10:56:31.812 (164.1325506) DEC = +03:02:23.11 (3.0397528)
Discovery date: 2021-03-19 08:05:04.004 (JD=2459292.8368519)

Potential host galaxy: SDSS J105631.81+030224.1

Remarks: Early SN candidate (r-rise > 0.62+-0.04 mag/day) classified using ALeRCE's stamp classifier - see http://arxiv.org/abs/2008.03309 - and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF21aaqbddv

Photometry

Discovery (first detection):
Discovery date: 2021-03-19 08:05:04.004
Flux: 19.0782 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2021-03-19 07:03:47
Limiting flux: 20.5096 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/2021gkr