GOES-7, known as GOES-H before becoming operational, is an American satellite. It was originally built as a weather satellite, and formed part of the US National Oceanic and Atmospheric Administration's Geostationary Operational Environmental Satellite system. Originally built as a ground spare, GOES-H was launched in 1987 due to delays with the next series of satellites. It was operated by NOAA until 1999, before being leased to Peacesat, who use it as a communications satellite. As of 2009, it was operational over the Pacific Ocean, providing communications for the Pacific Islands. On April 12, 2012, the spacecraft was finally decommissioned and moved to a graveyard orbit.
Artist's impression of a GOES-D series satellite
|Mission type||Weather satellite|
|Operator||NOAA / NASA (1987-1999)|
|Mission duration||3-7 years (planned)|
25 years (achieved)
|Start of mission|
|Launch date||26 February 1987, 23:05 UTC|
|Launch site||Cape Canaveral LC-17A|
|End of mission|
|Deactivated||12 April 2012|
|Longitude||75° West (1987-1989)|
98° West (1989-1992)
112° West (1992-1995)
135° West (1995-1999)
95° West (1999)
175° West (1999-2012)
|Perigee altitude||35,879 kilometres (22,294 mi)|
|Apogee altitude||35,898 kilometres (22,306 mi)|
GOES-H was launched aboard a McDonnell Douglas Delta 3914 rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch occurred at 23:05 GMT on 26 February 1987. The launch had originally been scheduled for late 1986, but was delayed after GOES-G failed to achieve orbit. It was built by Hughes Space and Communications, based on the HS-371 satellite bus, and was the last of five GOES-D series satellites to be launched.
Due to the loss of GOES-G, and delays in the development of the GOES-I series spacecraft, no reserve satellites were available in the late 1980s and early 1990s. After the imager on the GOES-6 satellite failed in 1989, GOES-7 was left as the only operational GOES satellite. It was moved to 98° West to cover the whole of the continental United States. In 1992, Meteosat 3 was leased from Eumetsat to take over GOES-EAST operations, allowing GOES-8 to be moved 112° West. When GOES-8 entered service in 1995, it replaced Meteosat 3, and GOES-7 was moved to the GOES-WEST position at 135° West. It remained in service until its retirement from service in 1996, at which time it was moved to 95° West. It was then transferred to Peacesat, and positioned at 175° West until its final retirement and disposal in 2012.
It is the only satellite to have been operated as both GOES-EAST and GOES-WEST in the course of normal operations. GOES-10 has been used as both GOES-EAST and GOES-WEST, however its operations as GOES-EAST were as a backup during an outage of GOES-12, and the satellite was not moved to the GOES-EAST orbital position.
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