EchoStar IV
Mission type | Communications | |
---|---|---|
Operator | EchoStar | |
COSPAR ID | 1998-028A | |
SATCAT no. | 25331 | |
Mission duration | 12 years | |
Spacecraft properties | ||
A2100AX | ||
Manufacturer | Lockheed Martin | |
Launch mass | 3,478 kg (7,668 lb) | |
Dry mass | 1,400 kg (3,100 lb) | |
Power | 10 kW | |
Start of mission | ||
Launch date | May 7, 1998, 23:45 | UTC|
Rocket | Proton-K/Blok-DM3 | |
Launch site | Baikonur 81/23 | |
End of mission | ||
Deactivated | July 2011 | |
Orbital parameters | ||
Reference system | Semi-major axis 42,538.0 kilometers (26,431.9 mi)[1] | |
Perigee altitude | 36,085.2 kilometers (22,422.3 mi)[1] | |
Apogee altitude | 36,250.7 kilometers (22,525.1 mi)[1] | |
Inclination | 7.0 degrees[1] | |
Period | 1,455.3 minutes[1] | |
Epoch | May 14, 2017[1] | |
Transponders | ||
Band | 32 EIRP | 53 dBW |
EchoStar IV is a communications satellite operated by EchoStar. Launched in 1998 it was operated in geostationary orbit at a longitude of 77 degrees west for 12 years.
Satellite
The launch of EchoStar IV made use of a
geosynchronous transfer orbit. EchoStar IV carried 32 Ku band transponders to provide direct voice and video communications to small dishes in North America after parking over 119° W or 148° W longitude.[2]
Specifications
- Launch mass: 3,478 kilograms (7,668 lb)
- batteries
- Stabilization: 3-axis
- Propulsion: LEROS-1C
- Longitude: 77° west
See also
References