HS-381 Satellite Bus
Data current as of 2026-07-20.
The HS-381 bus accounts for 5 cataloged objects, of which 5 are in orbit and 0 are active. Most are built by HSES. The largest operator on this bus is HCI. The first launched in 1984, the most recent in 1990.
5
In orbit
0
Active
5
Total launched
0
Reentered
HS-381 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged HS-381 satellites.
| Manufacturer | HSES |
|---|---|
| Purpose | Communication |
| Launch mass | 3231 kg |
| Dry mass | 1230 kg |
| Length | 4 m |
| Diameter | 4.3 m |
| Span | 6.2 m |
| Shape | Cyl + Ant |
| Power | Solar cells, batteries |
| Propulsion | R-4D-10 x2 |
| Design life | 12 years |
| Equipment | 13 UHF transponders |
| Typical orbit | 1446 min period, 11° inclination |
Top operators
HCI 5
Top countries
US 5
HS-381 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| LEASAT 5 Leasat 5 | 20410 | 1990-002B | HCI | Jan 9, 1990 | 1446 min, 11.1° | Inactive | ◉ |
| LEASAT 4 Leasat 4 | 15995 | 1985-076D | HCI | Aug 27, 1985 | 1472 min, 10.0° | Inactive | ◉ |
| LEASAT 3 Leasat 3 | 15643 | 1985-028C | HCI | Apr 12, 1985 | 1485 min, 11.2° | Inactive | ◉ |
| LEASAT 1 Leasat 1 | 15384 | 1984-113C | HCI | Nov 8, 1984 | 1461 min, 11.4° | Inactive | ◉ |
| LEASAT 2 Leasat 2 | 15236 | 1984-093C | HCI | Aug 30, 1984 | 1478 min, 10.7° | Inactive | ◉ |
Frequently asked questions
How many HS-381 satellites are there?
The catalog lists 5 objects built on the HS-381 bus. 5 are in orbit and 0 have reentered.
How many HS-381 satellites are in orbit?
5 HS-381 objects are currently in orbit, of which 0 carry an active status.
Who builds the HS-381 bus?
The HS-381 bus is most commonly built by HSES.
When did the first HS-381 satellite launch?
The first cataloged HS-381 satellite launched in 1984, and the most recent in 1990.