Yamal-200 Spacecraft
| Destination | Communications geostationary s/c |
| Launch date | 24.11.2003 |
| Mission duration | 2003-2015 |
| Onboard instruments developed at the Optico-physical department |
Onboard each of two Yamal-200s/c there are two BOKZ-U star trackers.
Star trackers destination – gyro astrocorrection. Since 2005 star trackers have been used for permanent control of the s/c angular position |
| Comments | BOKZ-U is a transition model of star tracker. The tracker's construction is unified and is applicable for both creation of a fully autonomous device and as a remote optical head. |