Determination of Physical Characteristics of Small-Size Space Debris in GEO

Results of small-size space debris optical observations in GEO are presented. Optical measurements were performed by the Zeiss-2000 telescope (D=2m, F=16m) at the Terskol observatory (North Caucasus). Initial reduction of CCD observations are processed by Apex II astronomical image processing package developed in the Pulkovo observatory of RAS. The results of optical observations of small objects in GEO in 2011-2012 were analyzed. Determination of space debris orbital parameters, area-to-mass ratios were performed using numerical-analytical theory of artificial near-Earth objects. Detailed data on new faint objects are also given.