CST-100 Satellite Bus
Data current as of 2026-07-20.
The CST-100 bus accounts for 3 cataloged objects, of which 0 are in orbit and 0 are active. 3 have reentered. Most are built by BOC3PF. The largest operator on this bus is BOCC. The first launched in 2019, the most recent in 2024.
0
In orbit
0
Active
3
Total launched
3
Reentered
CST-100 launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged CST-100 satellites.
| Manufacturer | BOC3PF |
|---|---|
| Purpose | Crewed spacecraft |
| Launch mass | 8000 kg |
| Dry mass | 8000 kg |
| Length | 2.2 m |
| Diameter | 4.5 m |
| Span | 4.5 m |
| Shape | Cone |
| Power | Solar cells, batteries |
| Propulsion | 4 x RS-88 combined abort/retro rocket engines, 24 x OMAC thrusters |
| Design life | 60 hours (freeflight); 210 days (docked) |
| Equipment | NDS docking adaptor |
Top operators
BOCC 3
Top countries
US 3
CST-100 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| STARLINER CFT-1 Calypso | 59968 | 2024-109A | BOCC | Jun 5, 2024 | 93 min, 51.6° | Reentered | ◉ |
| STARLINER OFT-2 Starliner OFT-2 | 52715 | 2022-055A | BOCC | May 19, 2022 | 93 min, 51.6° | Reentered | ◉ |
| STARLINER OFT-1 Starliner OFT | 44900 | 2019-094A | BOCC | Dec 20, 2019 | 90 min, 51.6° | Reentered | ◉ |
Frequently asked questions
How many CST-100 satellites are there?
The catalog lists 3 objects built on the CST-100 bus. 0 are in orbit and 3 have reentered.
How many CST-100 satellites are in orbit?
0 CST-100 objects are currently in orbit, of which 0 carry an active status.
Who builds the CST-100 bus?
The CST-100 bus is most commonly built by BOC3PF.
When did the first CST-100 satellite launch?
The first cataloged CST-100 satellite launched in 2019, and the most recent in 2024.