Glonass-K1 No. 20 (?)

Note: Satellite serial number and Cosmos designation not confirmed. Glonass-K are the third generation of satellite design for GLONASS satellite navigation system. GLONASS is a Russian space-based navigation system comparable to the similar GPS and Galileo systems. This generation improves on accuracy, power consumption and design life. Each satellite is unpressurized and weighs 935 kg, and has an operational lifetime of 10 years.

1.  

   Launch success.

2.  

   Updated entry for new launch per NOTAMs scheduled some time between 08:00-20:59 UTC daily, September 17-21; note launch vehicle and payload identities highly uncertain.

3.  

   Removed from current schedule with cancellation of closure notices.

4.  

   Added launch per NOTAMs; Launch vehicle and payload identities uncertain; exact launch window TBD.