GPS · Navigation
NAVSTAR 1 (OPS 5111)
NonoperationalNavigationMEO
NAVSTAR 1 (OPS 5111) is a U.S. Space Force navigation satellite, part of the GPS constellation, launched on February 22, 1978 into MEO.
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Launch
- Launch date
- February 22, 1978 at 11:44 PM UTC
- Launch site
- Vandenberg SFB, USA
- Launched by
- Atlas F/SVS →
- Operator
- United States Air Force
- Mission
- Navstar 1
- Launch record
- View full launch →
Orbit
- Orbit regime
- MEO
- Apoapsis
- 20,621 km
- Periapsis
- 20,188 km
- Inclination
- 64.34°
- Orbital period
- 727.01 min
Spacecraft
- Operator
- U.S. Space Force
- Manufacturer
- Lockheed Martin
- Users
- Government/Military
- Launch mass
- 520.32 kg
- Design lifetime
- 15 years
- Detailed purpose
- Navigation
Identity
- COSPAR (Int'l)
- 1978-020A
- NORAD catalog №
- 10684
- Object type
- Payload
- Owner / operator
United States- Constellation
- GPS
- Radar cross-section
- 0.5413 m²
- Status
- Nonoperational
End of mission
- Fate
- No longer operational — remains in orbit as inactive.
- Final status
- Nonoperational
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