Cluster Satellite Bus
Data current as of 2026-07-20.
The Cluster bus accounts for 4 cataloged objects, of which 2 are in orbit and 2 are active. 2 have reentered. Most are built by ASTDF. The largest operator on this bus is European Space Agency. All were launched in 2000.
2
In orbit
2
Active
4
Total launched
2
Reentered
Cluster launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged Cluster satellites.
| Manufacturer | ASTDF |
|---|---|
| Purpose | Magnetospheric Research |
| Launch mass | 1186 kg |
| Dry mass | 550 kg |
| Length | 1.3 m |
| Diameter | 2.9 m |
| Span | 100 m |
| Shape | Cyl + 4 Ant |
| Power | Solar cells, batteries |
| Propulsion | S400 |
| Equipment | FGM, EDI, ASPOC, STAFF, EFW, DWP, WHISPER, WBD, PEACE, CIS, RAPID |
| Typical orbit | 3211 min period, 150° inclination |
Top operators
Top countries
I-ESA 4
Cluster satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| CLUSTER II-FM8 (TANGO) Cluster Tango | 26464 | 2000-045B | ESA | Aug 9, 2000 | 3242 min, 150.0° | Active | ◉ |
| CLUSTER II-FM5 (RUMBA) Cluster Rumba | 26463 | 2000-045A | ESA | Aug 9, 2000 | 3196 min, 146.0° | Reentered | ◉ |
| CLUSTER II-FM6 (SALSA) Cluster Salsa | 26411 | 2000-041B | ESA | Jul 16, 2000 | 3242 min, 150.1° | Reentered | ◉ |
| CLUSTER II-FM7 (SAMBA) Cluster Samba | 26410 | 2000-041A | ESA | Jul 16, 2000 | 3211 min, 149.8° | Active | ◉ |
Frequently asked questions
How many Cluster satellites are there?
The catalog lists 4 objects built on the Cluster bus. 2 are in orbit and 2 have reentered.
How many Cluster satellites are in orbit?
2 Cluster objects are currently in orbit, of which 2 carry an active status.
Who builds the Cluster bus?
The Cluster bus is most commonly built by ASTDF.
When did the first Cluster satellite launch?
The cataloged Cluster satellites all launched in 2000.