HS-GEM Satellite Bus
Data current as of 2026-07-20.
The HS-GEM bus accounts for 4 cataloged objects, of which 4 are in orbit and 2 are active. Most are built by BOES. The largest operator on this bus is THUR. The first launched in 2000, the most recent in 2010.
4
In orbit
2
Active
4
Total launched
0
Reentered
HS-GEM launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged HS-GEM satellites.
| Manufacturer | BOES |
|---|---|
| Purpose | Communication |
| Launch mass | 5108 kg |
| Dry mass | 4000 kg |
| Length | 12.2 m |
| Diameter | 17 m |
| Span | 40.4 m |
| Shape | Box + Dish + 2 Pan |
| Power | 2 deployable solar arrays, batteries |
| Propulsion | R-4D-14-350 |
| Design life | 12 years |
| Equipment | L-band 128 active elements, 17 W SSPAs C-band 2 active (2 spare) |
| Typical orbit | 1436 min period, 5° inclination |
Top operators
THUR 3 SKYTE 1
Top countries
UAE 2 AE 1 US 1
HS-GEM satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| SKYTERRA 1 SkyTerra 1 | 37218 | 2010-061A | SKYTE | Nov 14, 2010 | 1436 min, 5.2° | Active | ◉ |
| THURAYA-3 Thuraya 3 | 32404 | 2008-001A | THUR | Jan 15, 2008 | 1436 min, 6.0° | Inactive | ◉ |
| THURAYA-2 Thuraya 2 | 27825 | 2003-026A | THUR | Jun 10, 2003 | 1436 min, 8.9° | Active | ◉ |
| THURAYA-1 Thuraya 1 | 26578 | 2000-066A | THUR | Oct 21, 2000 | 1455 min, 9.9° | Inactive | ◉ |
Frequently asked questions
How many HS-GEM satellites are there?
The catalog lists 4 objects built on the HS-GEM bus. 4 are in orbit and 0 have reentered.
How many HS-GEM satellites are in orbit?
4 HS-GEM objects are currently in orbit, of which 2 carry an active status.
Who builds the HS-GEM bus?
The HS-GEM bus is most commonly built by BOES.
When did the first HS-GEM satellite launch?
The first cataloged HS-GEM satellite launched in 2000, and the most recent in 2010.