| EchoStar IV | |
| Mission Type: | Communications |
| Operator: | EchoStar |
| Cospar Id: | 1998-028A |
| Satcat: | 25331 |
| Mission Duration: | 12 years |
| Spacecraft Bus: | A2100AX |
| Manufacturer: | Lockheed Martin |
| Dry Mass: | 1400kg (3,100lb) |
| Launch Mass: | 3478kg (7,668lb) |
| Power: | 10 kW |
| Launch Date: | UTC |
| Launch Rocket: | Proton-K/Blok-DM3 |
| Launch Site: | Baikonur 81/23 |
| Orbit Epoch: | May 14, 2017[1] |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Geostationary |
| Orbit Periapsis: | 36085.2km (22,422.3miles) |
| Orbit Apoapsis: | 36250.7km (22,525.1miles) |
| Orbit Inclination: | 7.0 degrees |
| Orbit Semimajor: | 42538km (26,432miles) |
| Orbit Period: | 1,455.3 minutes |
| Orbit Longitude: | 77° west |
| Apsis: | gee |
| Trans Band: | 32 |
| Trans Frequency: | Uplink: 17.3 - 17.8 GHz Downlink: 12.2 - 12.7 GHz |
| Trans Bandwidth: | 24 MHz |
| Trans Coverage: | United States, Mexico and Puerto Rico |
| Trans 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.
The launch of EchoStar IV made use of a Proton rocket flying from Site 81 at the Baikonur Cosmodrome, Kazakhstan. The launch took place at 23:45 UTC on May 7, 1998, with the spacecraft entering 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]