United States Air ForceAtlas E/SGS-2Space Launch Complex 3W, Vandenberg SFB, CA, USA
GPS 11
Launched
October 9, 1985
Summary
GPS 11 launched on an United States Air Force Atlas E/SGS-2 from Space Launch Complex 3W, Vandenberg SFB, CA, USA on October 9, 1985. It was United States Air Force's 838th launch, 8th this year and humanity's 3,000th orbital launch attempt. It was the 4th Atlas E/SGS-2 flight and the 1st this year. The payload was bound for Medium Earth Orbit (MEO). GPS 11, one of 3 catalogued objects, reached a 19,573 × 20,537 km orbit inclined 63.5°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Atlas E/SGS-2 · United States Air ForceGlobal Positioning System
- Booster
- No booster details on record.
- Mission
- Navigation · Medium Earth Orbit (MEO)
- Milestone
- 4th Atlas E/SGS-2 flight · 1st this yearUnited States Air Force's 838th launch8th this yearhumanity's 3,000th orbital launch attempt96th orbital launch attempt this year
Flight preview
Orbit: as tracked
GPS 11 · NORAD 16129 · 1985-093 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- NAVSTAR 11 (USA 10)
- Object ID
- 1985-093A
- Epoch
- 1985-10-10 14:38:23 UTC
- Mean motion
- 2.0209199 rev/day
- Eccentricity
- 0.0182358
- Inclination
- 63.497°
- Ascending node
- 140.6764°
- Arg. of perigee
- 159.2124°
- Mean anomaly
- 240.3137°
- Element set
- 999
- Rev at epoch
- 5
- B*
- 0.000099999
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO.
Catalogued objects
3 catalogued: 1 payload, 1 rocket stage, 1 component; 3 still in orbit
- GPS 11 · NORAD 16129 · in orbit
SGS-II · in orbit
Data from J. McDowell, planet4589.org
About this launch
First generation GPS satellite
Pad

Space Launch Complex 3W, Vandenberg SFB, CA, USA
69th launch from Space Launch Complex 3W, 2nd this year · 523rd from Vandenberg SFB, CA, USA
81 launches from this pad · 919 from Vandenberg SFB, CA, USA
210 days after the previous launch from this pad
Questions
When did GPS 11 launch?
GPS 11 launched on October 9, 1985. The time is known to the hour, not the minute.
Where can I watch GPS 11?
No webcast is on record for this launch.
What rocket launched GPS 11?
Atlas E/SGS-2, flown by United States Air Force. Atlas E/SGS-2 spec sheet
Where did GPS 11 launch from?
Space Launch Complex 3W, Vandenberg SFB, CA, USA.
What orbit did GPS 11 reach?
GPS 11, one of 3 catalogued objects, reached a 19,573 × 20,537 km orbit inclined 63.5°.
How many satellites did GPS 11 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
Which program is GPS 11 part of?
Global Positioning System. About Global Positioning System