Photo: Bill Ingalls · Public domain (US government)
Mission
Government/Top Secret · SSO
The IGS Optical 4 is a Japanese optical reconnaissance satellite. The satellite is operated by the Cabinet Satellite Information Center. The satellite serves both Japan's national defense and civil natural disaster monitoring.
What it put in orbit
| Object | Type | Orbit | Globe |
|---|---|---|---|
| IGS 6A 2011-050A | Payload | 0 × 0 km · 0.0° | Globe |
| H-2A R/B 2011-050B | Rocket body | re-entered 2025-07-11 | |
| H-2A DEB 2011-050C | Debris | re-entered 2013-01-12 | |
| H-2A DEB 2011-050D | Debris | re-entered 2012-11-01 |
COSPAR ID 2011-050 (data from GCAT, J. McDowell, CC BY 4.0). Orbits from the CelesTrak satellite catalogue (perigee × apogee, inclination).