EchoStar IV

EchoStar IV
Mission type Communications
Operator EchoStar
COSPAR ID 1998-028A
SATCAT no. 25331
Mission duration 12 years
Spacecraft properties
Bus 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 (1998-05-07UTC23:45Z) UTC
Rocket Proton-K/Blok-DM3
Launch site Baikonur 81/23
End of mission
Deactivated July 2011 (July 2011)
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 77° west[1]
Semi-major axis 42,538.0 kilometers (26,431.9 mi)[1]
Perigee 36,085.2 kilometers (22,422.3 mi)[1]
Apogee 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 Ku band
Frequency Uplink: 17.3 - 17.8 GHz
Downlink: 12.2 - 12.7 GHz
Bandwidth 24 MHz
Coverage area United 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.

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

References

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


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.