Classification certificate for object 2017gkk
TNS Classification Report No. 1191 [ 2017TNSCR.964....1O ]

Date Received (UTC): 2017-09-03 09:05:17
Sender: Dr. Francesca Onori
Group: NUTS

Francesca Onori report/s a classification of object: SN 2017gkk

Type: SN IIb
Redshift: 0.004923

Remarks: The spectrum resembles that of a pre-maximum (-11.3 days) type IIb supernova (Atel #10698). Classification was performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools.

The following Classification spectrum was provided:

Obsdate: 2017-09-02 05:39:59
Instrument: ALFOSC
Telescope: Nordic Optical Telescope

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2017gkk