United States Air ForceDelta II 7925Space Launch Complex 17A, Cape Canaveral SFS, FL, USA

GPS IIA-2

Launched

July 4, 1991

Launch Successful

Summary

GPS IIA-2 launched on an United States Air Force Delta II 7925 from Space Launch Complex 17A, Cape Canaveral SFS, FL, USA on July 4, 1991. It was United States Air Force's 900th launch, 8th this year and humanity's 3,646th orbital launch attempt. It was the 5th Delta II 7925 flight and the 4th this year. The payload was bound for Medium Earth Orbit (MEO). GPS IIA-2, one of 6 catalogued objects, reached a 195 × 20,360 km orbit inclined 34.5°. 6 objects from this launch are catalogued, 2 of them payloads.

Watch: No webcast on record.
Vehicle: Delta II 7925 · United States Air ForceGlobal Positioning System
Booster: No booster details on record.
Mission: Navigation · Medium Earth Orbit (MEO)
Milestone: 5th Delta II 7925 flight · 4th this yearUnited States Air Force's 900th launch8th this yearhumanity's 3,646th orbital launch attempt49th orbital launch attempt this year

Flight preview

Orbit: as tracked

34.5°Inclination

195 × 20360 kmPerigee × apogeefrom mean elements

356.3 minPeriodfrom mean elements

113.6°Ascending node

12888 d agoElement epoch1991-07-04 05:11 UTC · stale

GPS IIA-2 · NORAD 21552 · 1991-047 · Space-Track · tracking 1 of 6 objects

Show the numbers

Object: NAVSTAR 23 (USA 71)
Object ID: 1991-047A
Epoch: 1991-07-04 05:11:52 UTC
Mean motion: 4.04142263 rev/day
Eccentricity: 0.6056165
Inclination: 34.5459°
Ascending node: 113.593°
Arg. of perigee: 192.7665°
Mean anomaly: 139.6499°
Element set: 999
Rev at epoch: 1
B*: 0.000099999

Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO. Ascent drawn from padside's representative profile.

Catalogued objects

6 catalogued: 2 payloads, 2 rocket stages, 2 components; 1 still in orbit

GPS IIA-2 · NORAD 21552 · in orbit
LOSAT-X · NORAD 21553 · re-entered November 15, 1991

Delta 206 · re-entered October 29, 1991

Delta 206 Stage 3 · re-entered September 11, 1995

Data from J. McDowell, planet4589.org

About this launch

GPS-2A (Global Positioning System) or Navstar-2A (Navigation System using Timing And ranging) are improved satellites of the second generation of the GPS navigation system.

Pad

Space Launch Complex 17A, Cape Canaveral SFS, FL, USA

96th launch from Space Launch Complex 17A, 1st this year · 448th from Cape Canaveral SFS, FL, USA

145 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA

219 days after the previous launch from this pad

All launches from Cape Canaveral SFS, FL, USA Open in maps

Questions

When did GPS IIA-2 launch?

GPS IIA-2 launched on July 4, 1991. The time is known to the hour, not the minute.

Where can I watch GPS IIA-2?

No webcast is on record for this launch.

What rocket launched GPS IIA-2?

Delta II 7925, flown by United States Air Force. Delta II 7925 spec sheet

Where did GPS IIA-2 launch from?

Space Launch Complex 17A, Cape Canaveral SFS, FL, USA.

What orbit did GPS IIA-2 reach?

GPS IIA-2, one of 6 catalogued objects, reached a 195 × 20,360 km orbit inclined 34.5°.

How many satellites did GPS IIA-2 launch?

2 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).

Which program is GPS IIA-2 part of?

Global Positioning System. About Global Positioning System