Author: I.M. Volkov, Sternberg State Astronomical Institute, 
Lomonosov Moscow State University, Moscow, Russia

Title: The main results obtained by I.M.Volkov during his stay at the AISAS in 2011-12.

Abstract: 
    Considerable time was devoted to the UBVRI - photometric investigations of 
new bright supernovae in M51 and M101 galaxies. The main photometric parameters 
for type IIb SN 2011dh (M51) were derived and the comparison with SNe of similar 
types were reported. The light curves are similar to those for SN IIb 2008ax, 
but the initial flash is stronger and very short, and there are humps on the light 
curves in U and B at the onset of linear decline. The observations for SN in M101 
are still in progress.
   The UBVRI - observations of the Dwarf Nova Draconis 2011 enabled to classify 
it as a WZ Sge-type object. The orbital period was determined and rebrightenings 
of the object were detected.
   Multicolour photometry of the microquasar SS 433 = V1343 Aql revealed that 
it was in an active state in 2011. The colours of the object did not vary 
significantly with the precession phase and during the flare. The main eclipses 
became very shallow. The nutation period has shortened. Precise magnitudes 
of the comparison stars were derived.
   During the course of the investigations of the eclipsing variables with 
considerable eccentricity, the third components were discovered in the systems 
of DX Vel, EQ Boo and V974 Cyg. For DX Vel and EQ Boo the small discrepancies 
in photometric models forced us to suppose the multiplicity of the systems. 
The O - C analysis of the minima times for EQ Boo, V974 Cyg and the spectral 
observations for DX Vel reliably confirmed this hypothesis. The parameters 
of the orbits of the third bodies were derived. 
   A lot of multicolour observations of the unexplored  eccentric systems were 
obtained for the first time. Some of the systems show the revolution of the orbital 
ellipse. The processing of the data is in progress. The system with very short 
apsidal period of 50 years was discovered. The large interstellar reddening of this 
object enabled us to classify it as a massive binary with B-type components.