HEAD-1 Satellite Bus
Data current as of 2026-07-20.
The HEAD-1 bus accounts for 8 cataloged objects, of which 2 are in orbit and 1 are active. 6 have reentered. Most are built by SAST. The largest operator on this bus is HEAD. The first launched in 2017, the most recent in 2022.
2
In orbit
1
Active
8
Total launched
6
Reentered
HEAD-1 launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged HEAD-1 satellites.
| Manufacturer | SAST |
|---|---|
| Purpose | Communication M2M/IoT, traffic monitoring |
| Launch mass | 45 kg |
| Dry mass | 45 kg |
| Length | 0.5 m |
| Diameter | 0.2 m |
| Span | 2 m |
| Shape | Box + 2 Pan |
| Power | 2 deployable solar arrays, batteries |
| Design life | 2-3 years |
| Equipment | high performance AIS-receiver |
| Typical orbit | 92 min period, 97° inclination |
Top operators
HEAD 3
Top countries
CN 8
HEAD-1 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| JIAOTONG 4 (HEAD-2G) Jiaotong-4 | 53347 | 2022-090B | HEAD | Aug 4, 2022 | 88 min, 97.4° | Reentered | ◉ |
| OBJECT H HEAD-2F | 49322 | 2021-091H | HEAD | Oct 14, 2021 | 88 min, 97.4° | Reentered | ◉ |
| OBJECT E HEAD-2E | 49319 | 2021-091E | HEAD | Oct 14, 2021 | 92 min, 97.4° | Inactive | ◉ |
| HEAD-5 HEAD-5 | 45796 | 2020-039C | HEAD | Jun 17, 2020 | 88 min, 97.4° | Reentered | ◉ |
| HEAD-4 HEAD-4 | 45624 | 2020-034A | HEAD | May 31, 2020 | 87 min, 97.4° | Reentered | ◉ |
| HEAD 2B HEAD-2B | 44839 | 2019-087B | HEAD | Dec 7, 2019 | 87 min, 97.5° | Reentered | ◉ |
| HEAD 2A HEAD-2A | 44838 | 2019-087A | HEAD | Dec 7, 2019 | 88 min, 97.5° | Reentered | ◉ |
| HEAD-1 HEAD-1 | 43011 | 2017-072B | HEAD | Nov 14, 2017 | 101 min, 99.0° | Active | ◉ |
Frequently asked questions
How many HEAD-1 satellites are there?
The catalog lists 8 objects built on the HEAD-1 bus. 2 are in orbit and 6 have reentered.
How many HEAD-1 satellites are in orbit?
2 HEAD-1 objects are currently in orbit, of which 1 carry an active status.
Who builds the HEAD-1 bus?
The HEAD-1 bus is most commonly built by SAST.
When did the first HEAD-1 satellite launch?
The first cataloged HEAD-1 satellite launched in 2017, and the most recent in 2022.