JB-8B Satellite Bus
Data current as of 2026-07-20.
The JB-8B bus accounts for 4 cataloged objects, of which 4 are in orbit and 4 are active. Most are built by DFHZ. The largest operator on this bus is ZLZB. The first launched in 2018, the most recent in 2021.
4
In orbit
4
Active
4
Total launched
0
Reentered
JB-8B launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged JB-8B satellites.
| Manufacturer | DFHZ |
|---|---|
| Purpose | Earth observation |
| Launch mass | 500 kg |
| Dry mass | 500 kg |
| Length | 0.5 m |
| Diameter | 0.5 m |
| Span | 1 m |
| Shape | Box + 2 Pan |
| Power | 2 deployable solar arrays, batteries |
| Typical orbit | 107 min period, 63° inclination |
Top operators
ZLZB 4
Top countries
CN 4
JB-8B satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| YAOGAN-31 04A Yaogan 31 hao 04 zu 01 xing | 47854 | 2021-020A | ZLZB | Mar 13, 2021 | 107 min, 63.4° | Active | ◉ |
| YAOGAN-31 03A Yaogan 31 hao 03 zu 01 xing | 47691 | 2021-014A | ZLZB | Feb 24, 2021 | 107 min, 63.4° | Active | ◉ |
| YAOGAN-31 02A Yaogan 31 hao 02 zu 01 xing | 47532 | 2021-007A | ZLZB | Jan 29, 2021 | 107 min, 63.4° | Active | ◉ |
| YAOGAN-31 01A Yaogan 31 hao 01 zu 01 xing | 43275 | 2018-034A | ZLZB | Apr 10, 2018 | 107 min, 63.4° | Active | ◉ |
Frequently asked questions
How many JB-8B satellites are there?
The catalog lists 4 objects built on the JB-8B bus. 4 are in orbit and 0 have reentered.
How many JB-8B satellites are in orbit?
4 JB-8B objects are currently in orbit, of which 4 carry an active status.
Who builds the JB-8B bus?
The JB-8B bus is most commonly built by DFHZ.
When did the first JB-8B satellite launch?
The first cataloged JB-8B satellite launched in 2018, and the most recent in 2021.