Discovery certificate for object 2021cgi
TNS Astronomical Transient Report No. 98769 [ 2021TNSTR.383....1F ]

Date Received (UTC): 2021-02-08 21:20:41
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F. Forster, F.E. Bauer, A. Munoz-Arancibia, L. Hernandez-Garcia, G. Pignata, L. Galbany, G. Pignata, 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 2021cgi
Discoverer internal name: ZTF21aaimhma
Coordinates (J2000): RA = 04:14:17.766 (63.5740269) DEC = +32:30:47.31 (32.5131429)
Discovery date: 2021-02-08 06:53:26.002 (JD=2459253.7871065)

Potential host galaxy: WISEA J041417.96+323048.2

Remarks: Early SN candidate (r-rise > 0.49+-0.07 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/ZTF21aaimhma

Photometry

Discovery (first detection):
Discovery date: 2021-02-08 06:53:26.002
Flux: 19.5432 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2021-02-08 04:13:49
Limiting flux: 20.799 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/2021cgi