Navstar 77 -GPS Satellite

Navstar 77 or Navstar-3 (Navigation System using Timing And Ranging) are the first evolution stage of the third generation of the GPS satellites. This program will improve position, navigation, and timing services for the warfighter and civil users worldwide and provide advanced anti-jam capabilities yielding superior system security, accuracy and reliability.

Constellation Information

Satellite Information

NameNavstar 77
CountryUnited States
ManufacturerLockheed Martin
Launch DateDecember 23, 2018
Launch SiteCape Canaveral, United States
Launch VehicleFalcon 9
Mission Duration15 years (planned)
Satellite Mass4400 Kg
Launch Mass4400 Kg
OrbitMedium Earth Orbit
Apogee Altitude20,196 Km (12,549 mi)
Perigee Altitude20,118 Km (12,501 mi)
Satellite BlockGPS Block III
Period716.7 minutes
Pseudo Random Noise Code4
Inclination Angle55 Deg
COSPAR ID2018-109A
SATCAT Number43873
Other Names43873, USA 289