HS-378 Satellite Bus
Data current as of 2026-07-20.
The HS-378 bus accounts for 4 cataloged objects, of which 4 are in orbit and 0 are active. Most are built by NEC/HSES. The largest operator on this bus is JAXA. The first launched in 1981, the most recent in 1995.
4
In orbit
0
Active
4
Total launched
0
Reentered
HS-378 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged HS-378 satellites.
| Manufacturer | NEC/HSES |
|---|---|
| Purpose | Meteorology |
| Launch mass | 300 kg |
| Dry mass | 284 kg |
| Length | 3.5 m |
| Diameter | 2.2 m |
| Span | 3.5 m |
| Shape | Cyl |
| Power | Solar cells (body mounted), batteries |
| Propulsion | Star 27 |
| Equipment | ? |
| Typical orbit | 1442 min period, 8° inclination |
Top operators
Top countries
J 4
HS-378 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| HIMAWARI-5 (GMS-5) Himawari-5 | 23522 | 1995-011B | NASDA | Mar 18, 1995 | 1449 min, 14.3° | Inactive | ◉ |
| HIMAWARI-4 (GMS-4) Himawari 4 | 20217 | 1989-070A | NASDA | Sep 5, 1989 | 1478 min, 14.8° | Inactive | ◉ |
| HIMAWARI-3 (GMS-3) Himawari 3 | 15152 | 1984-080A | NASDA | Aug 2, 1984 | 1442 min, 10.6° | Inactive | ◉ |
| HIMAWARI-2 (GMS-2) Himawari 2 | 12677 | 1981-076A | NASDA | Aug 10, 1981 | 1447 min, 7.9° | Inactive | ◉ |
Frequently asked questions
How many HS-378 satellites are there?
The catalog lists 4 objects built on the HS-378 bus. 4 are in orbit and 0 have reentered.
How many HS-378 satellites are in orbit?
4 HS-378 objects are currently in orbit, of which 0 carry an active status.
Who builds the HS-378 bus?
The HS-378 bus is most commonly built by NEC/HSES.
When did the first HS-378 satellite launch?
The first cataloged HS-378 satellite launched in 1981, and the most recent in 1995.