United States Air ForceDelta II 6925Space Launch Complex 17A, Cape Canaveral SFS, FL, USA
GPS-2 4
Launched
October 21, 1989
Summary
GPS-2 4 launched on an United States Air Force Delta II 6925 from Space Launch Complex 17A, Cape Canaveral SFS, FL, USA on October 21, 1989. It was United States Air Force's 874th launch, 11th this year and humanity's 3,460th orbital launch attempt. It was the 4th Delta II 6925 flight. The payload was bound for Medium Earth Orbit (MEO). The tracked orbit of GPS II-4, one of 4 catalogued objects, from October 23, 1989, was 20,169 × 20,469 km inclined 54.8°. 4 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Delta II 6925 · United States Air ForceGlobal Positioning System
- Booster
- No booster details on record.
- Mission
- Navigation · Medium Earth Orbit (MEO)
- Milestone
- 4th Delta II 6925 flightUnited States Air Force's 874th launch11th this yearhumanity's 3,460th orbital launch attempt86th orbital launch attempt this year
Flight preview
Orbit: as tracked
GPS II-4 · NORAD 20302 · 1989-085 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- NAVSTAR 16 (USA 47)
- Object ID
- 1989-085A
- Epoch
- 1989-10-23 11:42:14 UTC
- Mean motion
- 1.99107256 rev/day
- Eccentricity
- 0.0056226
- Inclination
- 54.7791°
- Ascending node
- 326.6884°
- Arg. of perigee
- 1.388°
- Mean anomaly
- 358.6033°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0.000099999
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO.
Catalogued objects
4 catalogued: 1 payload, 2 rocket stages, 1 component; 1 still in orbit
- GPS II-4 · NORAD 20302 · in orbit
Delta 188 · re-entered October 16, 2023
Delta 188 Stage 3 · re-entered December 5, 1991
Data from J. McDowell, planet4589.org
About this launch
Second generation GPS navigation satellite
Pad
Space Launch Complex 17A, Cape Canaveral SFS, FL, USA
89th launch from Space Launch Complex 17A, 4th this year · 424th from Cape Canaveral SFS, FL, USA
145 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
64 days after the previous launch from this pad
Questions
When did GPS-2 4 launch?
GPS-2 4 launched on October 21, 1989. The time is known to the hour, not the minute.
Where can I watch GPS-2 4?
No webcast is on record for this launch.
What rocket launched GPS-2 4?
Delta II 6925, flown by United States Air Force. Delta II 6925 spec sheet
Where did GPS-2 4 launch from?
Space Launch Complex 17A, Cape Canaveral SFS, FL, USA.
What orbit did GPS-2 4 reach?
The tracked orbit of GPS II-4, one of 4 catalogued objects, from October 23, 1989, was 20,169 × 20,469 km inclined 54.8°.
How many satellites did GPS-2 4 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
Which program is GPS-2 4 part of?
Global Positioning System. About Global Positioning System