Jumpseat Satellite Bus
Data current as of 2026-07-20.
The Jumpseat bus accounts for 6 cataloged objects, of which 6 are in orbit and 0 are active. Most are built by HSES. The largest operator on this bus is National Reconnaissance Office. The first launched in 1971, the most recent in 1983.
6
In orbit
0
Active
6
Total launched
0
Reentered
Jumpseat launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged Jumpseat satellites.
| Manufacturer | HSES |
|---|---|
| Purpose | SIGINT |
| Launch mass | 1000 kg |
| Dry mass | 1000 kg |
| Length | 5 m |
| Diameter | 1.5 m |
| Span | 10 m |
| Shape | Cyl + 2 Pan + Dish |
| Propulsion | ? |
| Equipment | ? |
| Typical orbit | 706 min period, 0° inclination |
Top operators
Top countries
US 6
Jumpseat satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| OPS 7304 OPS 7304 | 14237 | 1983-078A | NRO/SAFSP | Jul 31, 1983 | · | Inactive | ◉ |
| OPS 7225 OPS 7225 | 12418 | 1981-038A | NRO/SAFSP | Apr 24, 1981 | · | Inactive | ◉ |
| OPS 6031 OPS 6031 | 10688 | · | NRO/SAFSP | Feb 25, 1978 | · | Inactive | ◉ |
| OPS 2439 OPS 2439 | 07687 | 1975-017A | NRO/SAFSP | Mar 10, 1975 | 706 min, 63.5° | Inactive | ◉ |
| OPS 7724 OPS 7724 | 06791 | 1973-056A | NRO/SAFSP | Aug 21, 1973 | 718 min, 62.8° | Inactive | ◉ |
| OPS 4788 OPS 4788 | 05053 | · | NRO/SAFSP | Mar 21, 1971 | · | Inactive | ◉ |
Frequently asked questions
How many Jumpseat satellites are there?
The catalog lists 6 objects built on the Jumpseat bus. 6 are in orbit and 0 have reentered.
How many Jumpseat satellites are in orbit?
6 Jumpseat objects are currently in orbit, of which 0 carry an active status.
Who builds the Jumpseat bus?
The Jumpseat bus is most commonly built by HSES.
When did the first Jumpseat satellite launch?
The first cataloged Jumpseat satellite launched in 1971, and the most recent in 1983.