IGS-R Satellite Bus
Data current as of 2026-07-22.
The IGS-R bus accounts for 9 cataloged objects, of which 7 are in orbit and 7 are active. 2 have reentered. Most are built by MELCO. The largest operator on this bus is CSICE. The first launched in 2003, the most recent in 2024.
7
In orbit
7
Active
9
Total launched
2
Reentered
IGS-R launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged IGS-R satellites.
| Manufacturer | MELCO |
|---|---|
| Purpose | Reconnaissance, radar |
| Launch mass | 1500 kg |
| Dry mass | 1000 kg |
| Length | 3 m |
| Diameter | 4 m |
| Span | 16.5 m |
| Shape | Box + 2 Pan |
| Power | Powered by solar arrays generating sufficient energy to operate the SAR and support systems. |
| Propulsion | ? |
| Design life | Designed for a mission duration of approximately 5 years. |
| Equipment | ? |
| Typical orbit | 95 min period, 0° inclination |
Top operators
CSICE 8 Cabinet Satellite Intelligence Center (CSICE) 1
Top countries
J 8 Japan 1
IGS-R satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| IGS R-8 IGS Radar-8 | 61439 | 2024-176A | Cabinet Satellite Intelligence Center (CSICE) | Sep 26, 2024 | · | Active | ◉ |
| IGS R-7 JSE reda-7 gouki | 55329 | 2023-012A | CSICE | Jan 26, 2023 | · | Active | ◉ |
| IGS R-6 JSE reda-6 gouki | 43495 | 2018-052A | CSICE | Jun 12, 2018 | · | Active | ◉ |
| IGS R-5 JSE reda-5 gouki | 42072 | 2017-015A | CSICE | Mar 17, 2017 | · | Active | ◉ |
| IGS 9A JSE reda yobi-ki | 40381 | 2015-004A | CSICE | Feb 1, 2015 | 95 min, 97.5° | Active | ◉ |
| IGS 8A JSE reda-4 gouki | 39061 | 2013-002A | CSICE | Jan 27, 2013 | 95 min, 97.5° | Active | ◉ |
| IGS 7A JSE reda-3 gouki | 37954 | 2011-075A | CSICE | Dec 12, 2011 | · | Active | ◉ |
| IGS 4A JSE reda-2 gouki | 30586 | 2007-005A | CSICE | Feb 24, 2007 | 95 min, 97.3° | Reentered | ◉ |
| IGS 1B JSE reda-1 gouki | 27699 | 2003-009B | CSICE | Mar 28, 2003 | 92 min, 97.1° | Reentered | ◉ |
Frequently asked questions
How many IGS-R satellites are there?
The catalog lists 9 objects built on the IGS-R bus. 7 are in orbit and 2 have reentered.
How many IGS-R satellites are in orbit?
7 IGS-R objects are currently in orbit, of which 7 carry an active status.
Who builds the IGS-R bus?
The IGS-R bus is most commonly built by MELCO.
When did the first IGS-R satellite launch?
The first cataloged IGS-R satellite launched in 2003, and the most recent in 2024.