| Name of Satellite, Alternate Names | Intelsat 25 (IS-25, Protostar 1, Chinasat 8) |
| Country of Operator/Owner | USA |
| Operator/Owner | Intelsat, Ltd. |
| Users | Commercial |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | 328.5 |
| Perigee (km) | 35778 |
| Apogee (km) | 35793 |
| Eccentricity | 0.000177912727876552 |
| Inclination (degrees) | 0.02 |
| Period (minutes) | 1436.1 |
| Launch Mass (kg.) | 4100 |
| Dry Mass (kg.) | |
| Power (watts) | 11000 |
| Date of Launch | 07-07-2008 |
| Expected Lifetime | 16 yrs. |
| Contractor | Space Systems/Loral |
| Country of Contractor | USA |
| Launch Site | Guiana Space Center |
| Launch Vehicle | Ariane 5 ECA |
| COSPAR Number | 2008-034A |
| NORAD Number | 33153 |
| Comments | First satellite of fleet; provides service in Asia. Purchased at auction by Intelsat in October, 2009 for $210 million. |