BD-3M/SAR Satellite Bus
Data current as of 2026-07-20.
The BD-3M/SAR bus accounts for 8 cataloged objects, of which 8 are in orbit and 8 are active. Most are built by CAST. The largest operator on this bus is CNSA. The first launched in 2018, the most recent in 2019.
8
In orbit
8
Active
8
Total launched
0
Reentered
BD-3M/SAR launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged BD-3M/SAR satellites.
| Manufacturer | CAST |
|---|---|
| Purpose | Navigation |
| Launch mass | 1014 kg |
| Dry mass | 850 kg |
| Length | 2.2 m |
| Diameter | 1.7 m |
| Span | 10 m |
| Shape | Box + 2 Pan |
| Power | 2 deployable solar arrays, batteries |
| Design life | 12 years |
| Equipment | ? |
| Typical orbit | 773 min period, 54° inclination |
Top operators
CNSA 8
Top countries
CN 8
BD-3M/SAR satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| BEIDOU-3 M23 Beidou DW 47 | 44543 | 2019-061B | CNSA | Sep 22, 2019 | 773 min, 54.4° | Active | ◉ |
| BEIDOU-3 M24 Beidou DW 48 | 44542 | 2019-061A | CNSA | Sep 22, 2019 | 773 min, 54.4° | Active | ◉ |
| BEIDOU-3 M18 Beidou DW 43 | 43707 | 2018-093B | CNSA | Nov 18, 2018 | 773 min, 54.2° | Active | ◉ |
| BEIDOU-3 M17 Beidou DW 42 | 43706 | 2018-093A | CNSA | Nov 18, 2018 | 773 min, 54.2° | Active | ◉ |
| BEIDOU-3 M15 Beidou DW 39 | 43648 | 2018-078B | CNSA | Oct 15, 2018 | 773 min, 54.1° | Active | ◉ |
| BEIDOU-3 M16 Beidou DW 40 | 43647 | 2018-078A | CNSA | Oct 15, 2018 | 773 min, 54.1° | Active | ◉ |
| BEIDOU-3 M14 Beidou DW 38 | 43623 | 2018-072B | CNSA | Sep 19, 2018 | 773 min, 56.7° | Active | ◉ |
| BEIDOU-3 M13 Beidou DW 37 | 43622 | 2018-072A | CNSA | Sep 19, 2018 | 773 min, 56.7° | Active | ◉ |
Frequently asked questions
How many BD-3M/SAR satellites are there?
The catalog lists 8 objects built on the BD-3M/SAR bus. 8 are in orbit and 0 have reentered.
How many BD-3M/SAR satellites are in orbit?
8 BD-3M/SAR objects are currently in orbit, of which 8 carry an active status.
Who builds the BD-3M/SAR bus?
The BD-3M/SAR bus is most commonly built by CAST.
When did the first BD-3M/SAR satellite launch?
The first cataloged BD-3M/SAR satellite launched in 2018, and the most recent in 2019.