| Nimiq-4 | |
| Mission Type: | High-definition television (HDTV) |
| Operator: | Telesat Canada |
| Cospar Id: | 2008-044A |
| Satcat: | 33373 |
| Mission Duration: | 15 years (planned) |
| Spacecraft Type: | Nimiq |
| Spacecraft Bus: | Eurostar-3000S |
| Manufacturer: | EADS Astrium |
| Power: | 12 kW |
| Launch Date: | 19 September 2008, 21:48:00 UTC |
| Launch Site: | Baikonur, Site 200/39 |
| Launch Contractor: | International Launch Services (ILS) |
| Orbit Reference: | Geocentric orbit |
| Orbit Regime: | Geostationary orbit |
| Orbit Longitude: | 82.0° West |
| Apsis: | gee |
| Trans Band: | 32 Ku-band, 8 Ka-band |
| Trans Coverage: | North America |
| Programme: | Nimiq program |
| Previous Mission: | Nimiq-3 |
| Next Mission: | Nimiq-5 |
Nimiq-4 is a Canadian geosynchronous communications satellite.[1] It was launched aboard a Proton-M / Briz-M launch vehicle at 21:48:00 UTC on 19 September 2008. It was positioned at 82.0° West longitude, and operated by Telesat Canada.[2]
The satellite was constructed by EADS Astrium, using a Eurostar-3000S bus.[3] It is powered by two solar panels, with a span of, producing 12 kW of power. The launch mass of the satellite is, with fuel. It carries 40 transponders, 32 of which operate in the Ku-band, and 8 which operate in the Ka-band. It provides digital HDTV to Canada and United States.[2]