| Name of Satellite, Alternate Names | Compass G-9 (Beidou ISGO-4) |
| Country of Operator/Owner | China (PR) |
| Operator/Owner | Chinese Defense Ministry |
| Users | Military |
| Purpose | Navigation/Global Positioning |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 35708 |
| Apogee (km) | 35879 |
| Eccentricity | 0.00202782027108755 |
| Inclination (degrees) | 55.2 |
| Period (minutes) | 1435.1 |
| Launch Mass (kg.) | 2300 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 26-07-2011 |
| Expected Lifetime | 8 yrs. |
| Contractor | Space Technology Research Institute (part of CASC) |
| Country of Contractor | China (PR) |
| Launch Site | Xichang Satellite Launch Center |
| Launch Vehicle | Long March 3A |
| COSPAR Number | 2011-038A |
| NORAD Number | 37763 |
| Comments | Part of Compass constellation. |