| Name of Satellite, Alternate Names | JCSat RA (JCSat 12, Japan Communications Satellite 12) |
| Country of Operator/Owner | Japan |
| Operator/Owner | Sky Perfect JSAT Corporation |
| Users | Commercial |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | 142.49 |
| Perigee (km) | 35780 |
| Apogee (km) | 35794 |
| Eccentricity | 0.000166045971013118 |
| Inclination (degrees) | 0.04 |
| Period (minutes) | 1436.12 |
| Launch Mass (kg.) | 4000 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 21-08-2009 |
| Expected Lifetime | 15 yrs. |
| Contractor | Lockheed Martin Commercial Space Systems |
| Country of Contractor | USA |
| Launch Site | Guiana Space Center |
| Launch Vehicle | Ariane 5 |
| COSPAR Number | 2009-044A |
| NORAD Number | 35755 |
| Comments | Backup for other JCSATs. |