| Satellite Name | Intelsat 21 |
| Status | Active |
| Mission Type | Communication |
| Orbit | Geostationary |
| Position | 58.0 ° West |
| Country | International |
| Operator | Intelsat S.A. |
| Satellite Manufacturer | Boeing |
| Model (BUS) | BSS 702MP |
| Launch Vehicle | Zenit 3SL |
| Launch Site | Sea Launch |
| Launch Date | 19.08.2012 |
| Satellite Lifetime | 15 Year (Planned lifetime has 2 year expired.) |
| Mass | 5984 Kg |
| Transponders | Ku Band Transponders : 36 C Band Transponders : 24 |
| Downlink Frequency | Unknown |
| Uplink Frequency | Unknown |
| Beacon Frequency | Unknown |
| Norad Number | 38749 |
| Cospar Number | 2012-045A |
| Toplam TV | 0 |
| SD TV | 0 |
| HD TV | 0 |
| Ultra HD (4K) TV | 0 |
| 3D TV | 0 |
| Radio | 0 |
| Data | 0 |
| Feed | 0 |
| Beams | |||
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