Discovery certificate for object 2021zfm
TNS Astronomical Transient Report No. 123945 [ 2021TNSTR3253....1M ]

Date Received (UTC): 2021-09-21 20:14:04
Sender: ZTF (ALeRCE)
Reporting Group: ALeRCE     Discovery Data Source: ZTF

A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, L. Hernandez-Garcia, A. Mourao, L. Galbany, E. Camacho, J. Silva-Farfan, 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 2021zfm
Discoverer internal name: ZTF21acddrbu
Coordinates (J2000): RA = 05:13:02.262 (78.259425) DEC = +67:44:08.42 (67.73567235)
Discovery date: 2021-09-20 08:20:18.997 (JD=2459477.8474421)

Potential host galaxy: WISEA J051302.48+674410.8

Remarks: Early SN candidate (g-rise > 0.50+-0.05 mag/day, r-rise > 0.17+-0.02 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/ZTF21acddrbu

Photometry

Discovery (first detection):
Discovery date: 2021-09-20 08:20:18.997
Flux: 19.3357 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2021-09-17 10:25:39
Limiting flux: 20.7855 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/2021zfm