| Name of Satellite, Alternate Names | Astra 3A |
| Country of Operator/Owner | Luxembourg |
| Operator/Owner | SES (Société Européenne des Satellites (SES)) |
| Users | Commercial |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | 23.48 |
| Perigee (km) | 35770 |
| Apogee (km) | 35804 |
| Eccentricity | 0.000403254501031857 |
| Inclination (degrees) | 0.06 |
| Period (minutes) | 1436.07 |
| Launch Mass (kg.) | 1500 |
| Dry Mass (kg.) | 750 |
| Power (watts) | 1500 |
| Date of Launch | 29-03-2002 |
| Expected Lifetime | 10 yrs. |
| Contractor | Boeing Satellite Systems |
| Country of Contractor | USA |
| Launch Site | Guiana Space Center |
| Launch Vehicle | Ariane 44L |
| COSPAR Number | 2002-015B |
| NORAD Number | 27400 |
| Comments | 20 transponders; provide follow-on capacity for the Kopernikus satellite of Deutsche Telekom AG, contracted for 10 transponders on spacecraft; German-speaking countries of Germany, Austria and Switzerland. |