Communications satellite
This article is about the 1990s communications satellite. For the 1960s communications satellite, see
Echo 2 (satellite) .
EchoStar II Mission type Communications Operator EchoStar COSPAR ID 1996-055A SATCAT no. 24313 Mission duration 12 years Spacecraft properties Bus AS-7000 Manufacturer Lockheed Martin Launch mass 2,885 kg (6,360 lb) Dry mass 2,000 kg (4,400 lb) Power 7 kW Start of mission Launch date September 11, 1996, 00:59 (1996-09-11UTC00:59Z ) UTC Rocket Ariane-4 2P H10-3Launch site Kourou ELA-2 End of mission Deactivated July 14, 2008 (2008-07-14 ) Orbital parameters Reference system Geocentric Regime Geostationary Longitude 80° West (current position)[ 1] Semi-major axis 42,146.0 km (26,188.3 mi)[ 1] Perigee altitude 35,764.4 km (22,223.0 mi)[ 1] Apogee altitude 35,787.2 km (22,237.1 mi)[ 1] Inclination 7.1 degrees[ 1] Period 1,435.2 minutes[ 1] Epoch November 28, 2017[ 1] Transponders Band 16Ku band Frequency Uplink : 17.3 - 17.8GHz Downlink : 12.2 - 12.7 GHzBandwidth 24MHz Coverage area Contiguous United States EIRP 53 dBW
EchoStar II is acommunications satellite operated byEchoStar . Launched in 1996 it was operated ingeostationary orbit at a longitude of 148 degrees west for 12 or 15 years.
The launch of EchoStar I made use of anAriane 4 rocket flying fromGuiana Space Centre inKourou ,French Guiana . The launch took place at 00:59 UTC on September 11, 1996,[ 2] geosynchronous transfer orbit . The spacecraft carried 16Ku band transponders to enable direct broadcast communications and television channels through 0.5 metres (1 ft 8 in) dishes on the ground in theContiguous United States .[ 3]
From September 1996 to November 2001, it was atposition 118.8° W , while from December 2001 until July 2008, it was at position 148° W. The satellite ended its activities on July 14, 2008.
January February March April May June July August September October November December Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ).Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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