EchoStar IV

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EchoStar IV
Mission type Communications
Operator EchoStar
COSPAR ID 1998-028A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 25331
Mission duration12 years
Spacecraft properties
Bus A2100AX
Manufacturer Lockheed Martin
Launch mass3,478 kg (7,668 lb)
Dry mass1,400 kg (3,100 lb)
Power10 kW
Start of mission
Launch dateMay 7, 1998, 23:45 (1998-05-07UTC23:45Z) UTC
Rocket Proton-K/Blok-DM3
Launch site Baikonur 81/23
End of mission
DeactivatedJuly 2011 (July 2011)
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude77° west [1]
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
Band32 Ku band
FrequencyUplink: 17.3 - 17.8 GHz
Downlink: 12.2 - 12.7 GHz
Bandwidth24 MHz
Coverage areaUnited States, Mexico and Puerto Rico
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.

Contents

Satellite

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]

Specifications

See also

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References

  1. 1 2 3 4 5 6 7 N2yo. "ECHOSTAR 4" . Retrieved November 28, 2017.
  2. "EchoStar 4". SatBeams. Retrieved September 28, 2017.