|
| GPS
2-4
|
|
Satellite
|
| Int'l Designation |
1989
085A
|
Active
|
| Owner / Sponsor |
USAF
|
| Mission |
Navigation
|
| Constellation /
Block |
NAVSTAR
GPS / Block
II
|
| Launch Mass |
1816
kg (4002 lbm)
|
| Dimensions, stowed |
|
| Mission Orbit |
MEO /
20,200 km (10, 900 nmi)
|
55°
|
| Transponders |
2
L-band
1 S-band
|
| Design Life |
7.5
years
|
| Power (EOL) |
0.710
kW
|
| Other names |
SVN
19
|
| Service History |
Unusable 1994 Oct 16
0545 UTC to 1994 Oct 19 1354 UTC due to change in
operational frequency standard from Cs to Rb
The course acquisition (C/A) code deficiency problem
was corrected effective 1994 Jan 4 at 0000 UTC; performance
no longer degraded
Unusable 1994 Dec 30 0536 UTC to 1995 Jan 04 1740 UTC due to
change in operational Rb frequency standards
Unusable 1999 Sep 22 1715 UTC to 1999 Oct 04 1727 UTC due to
change in operational frequency standard from Rb to Cs
|
|
Launch
|
| Launch Vehicle
Model |
Delta
II 6925 |
| Date / Time (UTC) |
1989
Oct 21
|
09:31
|
|
Financial
|
| Satellite cost |
|
| Web Links |
|
|
|
