GPS Satellite Bus

Data current as of 2026-07-20.

The GPS bus accounts for 20 cataloged objects, of which 20 are in orbit and 0 are active. Most are built by RWISB. The largest operator on this bus is AFSMC. The first launched in 1978, the most recent in 1996.

20
In orbit
0
Active
20
Total launched
0
Reentered

GPS launched per year

2 4 6 1978: 4 objects launched 1979: 0 objects launched 1980: 2 objects launched 1981: 0 objects launched 1982: 0 objects launched 1983: 1 object launched 1984: 2 objects launched 1985: 1 object launched 1986: 0 objects launched 1987: 0 objects launched 1988: 0 objects launched 1989: 0 objects launched 1990: 0 objects launched 1991: 0 objects launched 1992: 2 objects launched 1993: 6 objects launched 1994: 1 object launched 1995: 0 objects launched 1996: 1 object launched 1978 1983 1988 1993
Still in orbit Click a year to list its satellites.

Typical specifications

Most common values across cataloged GPS satellites.

Manufacturer RWISB
Purpose Navigation
Launch mass 860 kg
Dry mass 860 kg
Length 2.4 m
Diameter 1.8 m
Span 5.3 m
Shape Box + 2 Pan
Power 2 deployable solar arrays, batteries
Propulsion Star 37XFP
Design life 5 years
Equipment ?
Typical orbit 760 min period, 53° inclination

Top operators

AFSMC 10 AFSD 6 SAMSO 4

Top countries

US 20

GPS satellites

Track any of them live in KeepTrack.

Name NORAD COSPAR Owner Launched Orbit Status Track
NAVSTAR 37 (USA 117) GPS IIA-16 23833 1996-019A AFSMC Mar 28, 1996 740 min, 52.8° Inactive
NAVSTAR 36 (USA 100) GPS IIA-15 23027 1994-016A AFSMC Mar 10, 1994 771 min, 53.1° Inactive
NAVSTAR 35 (USA 96) GPS IIA-14 22877 1993-068A AFSMC Oct 26, 1993 764 min, 55.4° Inactive
NAVSTAR 34 (USA 94) GPS IIA-13 22779 1993-054A AFSMC Aug 30, 1993 761 min, 53.3° Inactive
NAVSTAR 33 (USA 92) GPS IIA-12 22700 1993-042A AFSMC Jun 26, 1993 760 min, 54.7° Inactive
NAVSTAR 32 (USA 91) GPS IIA-11 22657 1993-032A AFSMC May 13, 1993 767 min, 53.5° Inactive
NAVSTAR 31 (USA 90) GPS IIA-10 22581 1993-017A AFSMC Mar 30, 1993 762 min, 54.1° Inactive
NAVSTAR 30 (USA 88) GPS IIA-9 22446 1993-007A AFSMC Feb 3, 1993 766 min, 53.3° Inactive
NAVSTAR 29 (USA 87) GPS IIA-8 22275 1992-089A AFSMC Dec 18, 1992 765 min, 55.0° Inactive
NAVSTAR 28 (USA 85) GPS IIA-7 22231 1992-079A AFSMC Nov 22, 1992 761 min, 55.6° Inactive
NAVSTAR 11 (USA 10) GPS 11 16129 1985-093A AFSD Oct 9, 1985 760 min, 63.6° Inactive
NAVSTAR 10 (USA 5) GPS 10 15271 1984-097A AFSD Sep 8, 1984 748 min, 62.1° Inactive
NAVSTAR 9 (USA 1) GPS 9 15039 1984-059A AFSD Jun 13, 1984 749 min, 63.6° Inactive
NAVSTAR 8 (OPS 9794) GPS 8 14189 1983-072A AFSD Jul 14, 1983 751 min, 63.5° Inactive
NAVSTAR 6 (OPS 5118) Navstar 6 11783 1980-032A AFSD Apr 26, 1980 708 min, 61.8° Inactive
NAVSTAR 5 (OPS 5117) Navstar 5 11690 1980-011A AFSD Feb 9, 1980 718 min, 64.8° Inactive
NAVSTAR 4 (OPS 5114) Navstar 4 11141 1978-112A SAMSO Dec 11, 1978 747 min, 63.7° Inactive
NAVSTAR 3 (OPS 5113) Navstar 3 11054 1978-093A SAMSO Oct 7, 1978 744 min, 62.9° Inactive
NAVSTAR 2 (OPS 5112) Navstar 2 10893 1978-047A SAMSO May 13, 1978 714 min, 62.6° Inactive
NAVSTAR 1 (OPS 5111) Navstar 1 10684 1978-020A SAMSO Feb 22, 1978 727 min, 64.4° Inactive

Frequently asked questions

How many GPS satellites are there?

The catalog lists 20 objects built on the GPS bus. 20 are in orbit and 0 have reentered.

How many GPS satellites are in orbit?

20 GPS objects are currently in orbit, of which 0 carry an active status.

Who builds the GPS bus?

The GPS bus is most commonly built by RWISB.

When did the first GPS satellite launch?

The first cataloged GPS satellite launched in 1978, and the most recent in 1996.

Satellite data compiled by KeepTrack from CelesTrak, Space-Track, and GCAT, provided under CC BY-NC 4.0.