United States Air ForceAtlas F/SVSSpace Launch Complex 3E, Vandenberg SFB, CA, USA
Navstar 1
Launched
February 22, 1978
Summary
Navstar 1 launched on an United States Air Force Atlas F/SVS from Space Launch Complex 3E, Vandenberg SFB, CA, USA on February 22, 1978. It was United States Air Force's 708th launch, 4th this year and humanity's 2,065th orbital launch attempt. It was the 2nd Atlas F/SVS flight and the 1st this year. The payload was bound for Medium Earth Orbit (MEO). The tracked orbit of Navstar 1, one of 2 catalogued objects, from February 25, 1978, was 19,758 × 19,965 km inclined 63.3°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Atlas F/SVS · United States Air ForceGlobal Positioning System
- Booster
- No booster details on record.
- Mission
- Navigation · Medium Earth Orbit (MEO)
- Milestone
- 2nd Atlas F/SVS flight · 1st this yearUnited States Air Force's 708th launch4th this yearhumanity's 2,065th orbital launch attempt20th orbital launch attempt this year
Flight preview
Orbit: as tracked
Navstar 1 · NORAD 10684 · 1978-020 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- OPS 5111 (NAVSTAR 1)
- Object ID
- 1978-020A
- Epoch
- 1978-02-25 16:00:00 UTC
- Mean motion
- 2.04335546 rev/day
- Eccentricity
- 0.0039523
- Inclination
- 63.2652°
- Ascending node
- 228.0321°
- Arg. of perigee
- 148.9683°
- Mean anomaly
- 279.183°
- Element set
- 999
- Rev at epoch
- 11
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO.
Catalogued objects
2 catalogued: 1 payload, 1 component; 1 still in orbit
- Navstar 1 · NORAD 10684 · in orbit
Data from J. McDowell, planet4589.org
About this launch
First generation GPS satellite
Pad

Space Launch Complex 3E, Vandenberg SFB, CA, USA
17th launch from Space Launch Complex 3E, 1st this year · 456th from Vandenberg SFB, CA, USA
48 launches from this pad · 919 from Vandenberg SFB, CA, USA
about 10 years after the previous launch from this pad
Questions
When did Navstar 1 launch?
Navstar 1 launched on February 22, 1978. The time is known to the hour, not the minute.
Where can I watch Navstar 1?
No webcast is on record for this launch.
What rocket launched Navstar 1?
Atlas F/SVS, flown by United States Air Force. Atlas F/SVS spec sheet
Where did Navstar 1 launch from?
Space Launch Complex 3E, Vandenberg SFB, CA, USA.
What orbit did Navstar 1 reach?
The tracked orbit of Navstar 1, one of 2 catalogued objects, from February 25, 1978, was 19,758 × 19,965 km inclined 63.3°.
How many satellites did Navstar 1 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
Which program is Navstar 1 part of?
Global Positioning System. About Global Positioning System