HS-301 Satellite Bus
Data current as of 2026-07-20.
The HS-301 bus accounts for 3 cataloged objects, of which 3 are in orbit and 0 are active. Most are built by HSES. The largest operator on this bus is NASA. The first launched in 1963, the most recent in 1964.
3
In orbit
0
Active
3
Total launched
0
Reentered
HS-301 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged HS-301 satellites.
| Manufacturer | HSES |
|---|---|
| Purpose | Communication |
| Launch mass | 34 kg |
| Dry mass | 27 kg |
| Length | 0.4 m |
| Diameter | 0.7 m |
| Span | 0.4 m |
| Shape | Cyl |
| Power | Solar cells (body mounted), batteries |
| Propulsion | JPL SR-12-1 |
| Typical orbit | 1236 min period, 7° inclination |
Top operators
Top countries
US 3
HS-301 satellites
Track any of them live in KeepTrack.
Frequently asked questions
How many HS-301 satellites are there?
The catalog lists 3 objects built on the HS-301 bus. 3 are in orbit and 0 have reentered.
How many HS-301 satellites are in orbit?
3 HS-301 objects are currently in orbit, of which 0 carry an active status.
Who builds the HS-301 bus?
The HS-301 bus is most commonly built by HSES.
When did the first HS-301 satellite launch?
The first cataloged HS-301 satellite launched in 1963, and the most recent in 1964.