Classification certificate for object 2018ddy
TNS Classification Report No. 2276 [ 2018TNSCR.988....1K ]

Date Received (UTC): 2018-07-15 08:47:10
Sender: Jose Prieto
Group: ASAS-SN

L. Khlat (ENS-Lyon), J. L. Prieto (UDP), S. Dong (KIAA-PKU) report/s a classification of object: SN 2018ddy

Type: SN Ia
Redshift: 0.0513

Remarks: We obtained an optical low-resolution spectrum of supernovae candidates on UT 2018 July 15 with WFCCD mounted on the du Pont 2.5m telescope at Las Campanas Observatory. The spectrum of ASASSN-18on/AT2018ddy is that of a Type Ia-norm after maximum light. SNID (Blondin & Tonry 2007) gives a best fit age of +9.2 days after maximum light and z=0.051 as the redshift, consistent with the host galaxy. The redshift measured from the host galaxy narrow H-alpha line is 0.0513.

The following Classification spectrum was provided:

Obsdate: 2018-07-15 05:14:15
Instrument: WFCCD
Telescope: Las Campanas Observatory du Pont telescope

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2018ddy