HS-353 Satellite Bus
Data current as of 2026-07-20.
The HS-353 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 Intelsat. The first launched in 1975, the most recent in 1978.
5
In orbit
0
Active
5
Total launched
0
Reentered
HS-353 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged HS-353 satellites.
| Manufacturer | HSES |
|---|---|
| Purpose | Communication |
| Launch mass | 769 kg |
| Dry mass | 630 kg |
| Length | 7 m |
| Diameter | 2.4 m |
| Span | 7 m |
| Shape | Cyl + 2 Dish |
| Power | Solar cells (body mounted), batteries |
| Propulsion | SVM-4A |
| Design life | 7 years |
| Equipment | 20 C-band transponders |
| Typical orbit | 1441 min period, 9° inclination |
Top operators
Top countries
I-INT 5
HS-353 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| INTELSAT 4A-F6 INTELSAT IVA F6 | 10778 | 1978-035A | INTEL | Mar 31, 1978 | 1436 min, 8.7° | Inactive | ◉ |
| INTELSAT 4A-F3 INTELSAT IVA F3 | 10557 | 1978-002A | INTEL | Jan 7, 1978 | 1441 min, 8.9° | Inactive | ◉ |
| INTELSAT 4A-F4 INTELSAT IVA F4 | 10024 | 1977-041A | INTEL | May 26, 1977 | 1448 min, 8.8° | Inactive | ◉ |
| INTELSAT 4A-F2 INTELSAT IVA F2 | 08620 | 1976-010A | INTEL | Jan 29, 1976 | 1445 min, 7.8° | Inactive | ◉ |
| INTELSAT 4A-F1 INTELSAT IVA F1 | 08330 | 1975-091A | INTEL | Sep 26, 1975 | 1441 min, 7.8° | Inactive | ◉ |
Frequently asked questions
How many HS-353 satellites are there?
The catalog lists 5 objects built on the HS-353 bus. 5 are in orbit and 0 have reentered.
How many HS-353 satellites are in orbit?
5 HS-353 objects are currently in orbit, of which 0 carry an active status.
Who builds the HS-353 bus?
The HS-353 bus is most commonly built by HSES.
When did the first HS-353 satellite launch?
The first cataloged HS-353 satellite launched in 1975, and the most recent in 1978.