TITLE:
Outburst of  the slow classical nova V612 Sct.

AUTHOR:
D. Chochol,  AI SAS 

ABSTRACT:
The results of the multicolour UBVRI photometry and echelle 
spectroscopy of the nova V612 Sct, discovered during its 
outburst on 2017 June 19.41 UT, are presented. The nova 
reached brightness maximum V = 8.42 mag on 2017 July 29.99 UT. 
The V and B light curves were used to classify the object 
as a slow nova of J-type with multiple peaks on decline and 
 to find the basic characteristics of the nova. Estimated 
colour excess E(B-V) = 0.75 allowed to derive the distance 
to the nova 3.5 kpc. The study of radial velocities of Hα 
and Hβ P Cyg absorptions revealed the structure of an ex-
panding shell consisting of  inner and outer envelopes, 
accelerated by the wind. The P Cyg absorptions were most 
enhanced during rebrightenings.