Tianhe Satellite Bus
Data current as of 2026-07-21.
The Tianhe bus accounts for 3 cataloged objects, of which 3 are in orbit and 3 are active. Most are built by CAST. The largest operator on this bus is CMSEO. The first launched in 2021, the most recent in 2022.
3
In orbit
3
Active
3
Total launched
0
Reentered
Tianhe launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged Tianhe satellites.
| Manufacturer | CAST |
|---|---|
| Purpose | Space station |
| Launch mass | 21500 kg |
| Dry mass | 21500 kg |
| Length | 17.9 m |
| Diameter | 4.2 m |
| Span | 55 m |
| Shape | Step Cyl + 2 Pan |
| Power | 2 deployable solar arrays, batteries |
| Design life | 10 years |
| Typical orbit | 92 min period, 41° inclination |
Top operators
CMSEO 3
Top countries
CN 3
Tianhe satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| CSS (MENGTIAN) Mengtian | 54216 | 2022-143A | CMSEO | Oct 31, 2022 | 92 min, 41.5° | Active | ◉ |
| CSS (WENTIAN) Wentian | 53239 | 2022-085A | CMSEO | Jul 24, 2022 | 92 min, 41.5° | Active | ◉ |
| CSS (TIANHE) Tianhe | 48274 | 2021-035A | CMSEO | Apr 29, 2021 | 92 min, 41.5° | Active | ◉ |
Frequently asked questions
How many Tianhe satellites are there?
The catalog lists 3 objects built on the Tianhe bus. 3 are in orbit and 0 have reentered.
How many Tianhe satellites are in orbit?
3 Tianhe objects are currently in orbit, of which 3 carry an active status.
Who builds the Tianhe bus?
The Tianhe bus is most commonly built by CAST.
When did the first Tianhe satellite launch?
The first cataloged Tianhe satellite launched in 2021, and the most recent in 2022.