ZY Satellite Bus
Data current as of 2026-07-20.
The ZY bus accounts for 19 cataloged objects, of which 15 are in orbit and 11 are active. 3 have reentered. Most are built by CAST. The largest operator on this bus is ZZWYZ. The first launched in 1999, the most recent in 2026.
15
In orbit
11
Active
19
Total launched
3
Reentered
ZY launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged ZY satellites.
| Manufacturer | CAST |
|---|---|
| Purpose | Earth Observation |
| Launch mass | 1450 kg |
| Dry mass | 1400 kg |
| Length | 1.8 m |
| Diameter | 2 m |
| Span | 9 m |
| Shape | Box + Pan |
| Power | Deployable solar array, batteries |
| Propulsion | AOCS 20N |
| Design life | 2 years |
| Equipment | 3 panchromatic cameras, 1 multispectral imager. |
| Typical orbit | 100 min period, 98° inclination |
Top operators
ZZWYZ 5 GCDX/ZZWYZ 4 ZZWYZ/INPE 4 ZZB 3 CAST/INPE 1 CNSA 1
Top countries
CN 17 PRC 2
ZY satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| DAQI-2 | 68760 | 2026-084A | ZZWYZ | Apr 17, 2026 | 99 min, 98.3° | Inactive | ◉ |
| ZY 3 04 | 67131 | 2025-300A | GCDX/ZZWYZ | Dec 16, 2025 | 95 min, 97.5° | Active | ◉ |
| DAQI 1 Daqi Huanjing Jiance Weixing | 52257 | 2022-039A | ZZWYZ | Apr 15, 2022 | 99 min, 98.1° | Active | ◉ |
| ZY-1 02E Zi Yuan 1-02E | 50465 | 2021-131A | ZZWYZ | Dec 26, 2021 | 100 min, 98.4° | Active | ◉ |
| CZ-4B DEB deb CZ-4B | 45943 | 2020-051E | GCDX/ZZWYZ | Jul 25, 2020 | 88 min, 97.5° | Reentered | ◉ |
| ZINYUAN-3 Zi Yuan 3-03 | 45939 | 2020-051A | GCDX/ZZWYZ | Jul 25, 2020 | 95 min, 97.5° | Active | ◉ |
| CBERS 4A Zi Yuan 1-04A | 44883 | 2019-093E | ZZWYZ/INPE | Dec 20, 2019 | 97 min, 98.0° | Active | ◉ |
| ZY-1 02D Zi Yuan 1-02D | 44528 | 2019-059A | ZZWYZ | Sep 12, 2019 | 100 min, 98.7° | Active | ◉ |
| HXMT (HUIYAN) Huiyan | 42758 | 2017-034A | CNSA | Jun 15, 2017 | 95 min, 43.0° | Active | ◉ |
| ZIYUAN 3-2 (ZY 3-2) Zi Yuan 3-02 | 41556 | 2016-033A | GCDX/ZZWYZ | May 30, 2016 | 95 min, 97.4° | Active | ◉ |
| CBERS 4 Zi Yuan 1-04 | 40336 | 2014-079A | ZZWYZ/INPE | Dec 7, 2014 | 100 min, 98.4° | Active | ◉ |
| ZIYUAN 3-1 (ZY 3-1) Zi Yuan 3-01 | 38046 | 2012-001A | GCDX/ZZWYZ | Jan 9, 2012 | 88 min, 97.1° | Inactive | ◉ |
| ZIYUAN 1-02C (ZY 1-02C) Zi Yuan 1-02C | 38038 | 2011-079A | ZZWYZ | Dec 22, 2011 | 100 min, 98.4° | Active | ◉ |
| CBERS 2B Zi Yuan 1-02B | 32062 | 2007-042A | ZZWYZ/INPE | Sep 19, 2007 | 100 min, 98.4° | Inactive | ◉ |
| JB-3 3 (ZY 2C) Zi Yuan 2-03 | 28470 | 2004-044A | ZZB | Nov 6, 2004 | 95 min, 97.3° | Active | ◉ |
| CBERS 2 (ZY 1B) Zi Yuan 1-02 | 28057 | 2003-049A | ZZWYZ/INPE | Oct 21, 2003 | 100 min, 98.8° | Inactive | ◉ |
| JB-3 2 (ZY 2B) Zi Yuan 2-02 | 27550 | 2002-049A | ZZB | Oct 27, 2002 | 87 min, 97.1° | Reentered | ◉ |
| JB-3 1 (ZY 2A) Zi Yuan 2-01 | 26481 | 2000-050A | ZZB | Sep 1, 2000 | 87 min, 97.1° | Reentered | ◉ |
| CBERS 1 (ZY 1A) Zi Yuan 1-01 | 25940 | 1999-057A | CAST/INPE | Oct 14, 1999 | 100 min, 98.8° | Inactive | ◉ |
Frequently asked questions
How many ZY satellites are there?
The catalog lists 19 objects built on the ZY bus. 15 are in orbit and 3 have reentered.
How many ZY satellites are in orbit?
15 ZY objects are currently in orbit, of which 11 carry an active status.
Who builds the ZY bus?
The ZY bus is most commonly built by CAST.
When did the first ZY satellite launch?
The first cataloged ZY satellite launched in 1999, and the most recent in 2026.