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Galaxy 17
Galaxy 17 is a communications satellite owned by Intelsat to be located at 91° West longitude, serving the North American market. Galaxy 17 was intended to replace SBS 6. It was built by Alcatel Alenia Space (which is now Thales Alenia Space), in its Cannes Mandelieu Space Center, France. Galaxy 17 was launched by Arianespace from Kourou, French Guiana on an Ariane 5 rocket along with Astra 1L. It became operational at 74° West longitude in the geostationary orbit and replaced SBS-6 which was moved out of the geostationary orbit to a parking orbit in the Graveyard orbit. This took place on July 7, 2007. Galaxy 17 began its move to 91° West longitude when Horizons-2 was launched and placed in the 74° West longitude slot. Horizons-2 was originally slated to replace SBS-6 but the launch was delayed, possibly due to the delayed repairs of the Sea Launch vessel. Galaxy 17 is the first primarily European satellite to cover the U.S. Built by a French/Italian manufacturer, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBS 6
SBS6 is a Dutch free-to-cable commercial TV channel and is a part of Talpa TV, formerly known as SBS Broadcasting B.V. and now owned by Talpa Network. Other channels of the group in the Netherlands are Net5, Veronica, and SBS9. History SBS stands for Scandinavian Broadcasting System. When the SBS Broadcasting Group started expanding outside of Scandinavia in 1995, one of the first countries where they set up a channel was the Netherlands with SBS6. SBS6 was the third Dutch commercial TV station after RTL 4 and RTL 5, both being launched in 1989 and 1993 respectively. SBS6 launched on 28 August 1995. When SBS6 was launched, they were in a tough competition with the channel Veronica, which started as a commercial station at the same time. Both SBS6 and Veronica wanted to be on channel 6 of the viewer's television. The SBS Broadcasting Group expanded their Dutch channel lineup with Net5 on 1 March 1999. In 2003, Veronica was added to the lineup. The German ProSiebenSat.1 Media ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Television
Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location. The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter. A satellite receiver then decodes the desired television program for viewing on a television set. Receivers can be external set-top boxes, or a built-in television tuner. Satellite television provides a wide range of channels and services. It is usually the only television available in many remote geographic areas without terrestrial television or cable television service. Modern systems signals are relayed from a communications satellite on the X band (8–12 GHz) or Ku band (12–18 GHz) frequencies requiring only a small dish less than a meter in diameter. The first satellite TV systems were an obsolete type now known as television receive-only. Thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellites In Geostationary Orbit
Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inquiry studying them. There are many disagreements about its precise definition. John Peters argues that the difficulty of defining communication emerges from the fact that communication is both a universal phenomenon and a specific discipline of institutional academic study. One definitional strategy involves limiting what can be included in the category of communication (for example, requiring a "conscious intent" to persuade). By this logic, one possible definition of communication is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions. An important distinction is between verbal communication, which happens through the use of a language, and non ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classic Arts Showcase
Classic Arts Showcase (CAS) is a television channel in the United States promoting the fine arts. The television program content includes prepared media and recorded live performances. It is a 24-hour non-commercial satellite channel broadcasting a mix of various classic arts including animation, architectural art, ballet, chamber, choral music, dance, folk art, museum art, musical theatre, opera, orchestral, recital, solo instrumental, solo vocal, and theatrical play, as well as classic film and archival documentaries. Description Self-described on its web site as "Classical MTV", the channel features renowned artists, both professional and amateur, as well as many rare and independent performances and videos. An 8-hour mix of video clips is prepared weekly and broadcast three times daily. Text displayed on the screen provides details about the recording, and encourages viewers to gain inspiration and "...go out and feast from the buffet of arts available in your community." The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graveyard Orbit
A graveyard orbit, also called a junk orbit or disposal orbit, is an orbit that lies away from common operational orbits. One significant graveyard orbit is a supersynchronous orbit well beyond geosynchronous orbit. Some satellites are moved into such orbits at the end of their operational life to reduce the probability of colliding with operational spacecraft and generating space debris. Overview A graveyard orbit is used when the change in velocity required to perform a de-orbit maneuver is too large. De-orbiting a geostationary satellite requires a delta-v of about , whereas re-orbiting it to a graveyard orbit only requires about . For satellites in geostationary orbit and geosynchronous orbits, the graveyard orbit is a few hundred kilometers beyond the operational orbit. The transfer to a graveyard orbit beyond geostationary orbit requires the same amount of fuel as a satellite needs for about three months of stationkeeping. It also requires a reliable attitude control d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geostationary Orbit
A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitude above Earth's equator ( in radius from Earth's center) and following the direction of Earth's rotation. An object in such an orbit has an orbital period equal to Earth's rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky. The concept of a geostationary orbit was popularised by the science fiction writer Arthur C. Clarke in the 1940s as a way to revolutionise telecommunications, and the first satellite to be placed in this kind of orbit was launched in 1963. Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas do not have to rotate to track them but can be pointed permanently at the position in the sky where the sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
74th Meridian West
The meridian 74° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Atlantic Ocean, the Caribbean Sea, South America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole. It is the most populous meridian in the Americas and the second most populous west of Greenwich, being home to between 30.3 million and 31.2 million people as of 2019. In Antarctica, the meridian defines the western limit of the Argentinian territorial claim, and passes through the Chilean and British claims – the three claims overlap. The 74th meridian west forms a great circle with the 106th meridian east. From Pole to Pole Starting at the North Pole and heading south to the South Pole, the 74th meridian west passes through: : See also *73rd meridian west *75th meridian west The meridian 75° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Atl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astra 1L
Astra 1L, is one of the Astra geostationary satellites owned and operated by SES, was purchased in June 2003. Launch It was launched on 4 May 2007, at 22:29 UTC by an Ariane 5ECA from Centre Spatial Guyanais at Kourou, French Guiana. Satellite description The satellite is based on the A2100AXS satellite bus, manufactured by Lockheed Martin Commercial Space Systems, Newtown, Pennsylvania, and has a minimum service life of 15 years. It features 29 Ku-band and 2 Ka-band transponders to service Europe. SES stated that Astra 1L would replace Astra 2C. See also * SES (satellite operator) * Astra (satellite family) * Astra 19.2°E (orbital position) * Astra 2C Astra 2C is one of the Astra communications satellites owned and operated by Société Eurpéenne des Satellites. Designed to join Astra 2A and Astra 2B at the Astra 28.2°E orbital position providing digital television and radio broadcast ser ... References Astra satellites Satellites of Luxembourg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Guiana
French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic Ocean, Atlantic coast of South America in the Guianas. It borders Brazil to the east and south and Suriname to the west. With a land area of , French Guiana is the second-largest Regions of France, region of France (more than one-seventh the size of Metropolitan France) and the largest Special member state territories and the European Union, outermost region within the European Union. It has a very low population density, with only . (Its population is less than that of Metropolitan France.) Half of its 294,436 inhabitants in 2022 lived in the metropolitan area of Cayenne, its Prefectures in France, capital. 98.9% of the land territory of French Guiana is covered by forests, a large part of which is Old-growth forest, primeval Tropical r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kourou
Kourou () is a commune in French Guiana, an overseas region and department of France in South America. Kourou is famous for being the location of the Guiana Space Centre, the main spaceport of France and the European Space Agency (ESA). It is an administrative district in French Guiana and the main town there. Geography Some northwest of the French Guianese capital Cayenne the Kourou River empties into the Atlantic Ocean. At the mouth of this river sits the town of Kourou, which is ringed by four hills: Carapa, Pariacabo, Café and Lombard, with the Singes and Condamine mountains not far behind. There are three lakes within the town's city limits: Lake Bois Diable (where one can take lessons in jetski and other aquatic sports), Lake Marie-Claire (the smallest and calmest), and Lake Bois Chaudat (the biggest of the three; also open to sport lovers, especially canoers and kayakers). Long white sand beaches and some rocky outcrops line the town's ocean coast, the riverbank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arianespace
Arianespace SA is a French company founded in 1980 as the world's first commercial launch service provider. It undertakes the operation and marketing of the Ariane programme. The company offers a number of different launch vehicles: the heavy-lift Ariane 5 for dual launches to geostationary transfer orbit, the Soyuz-2 as a medium-lift alternative, and the solid-fueled Vega for lighter payloads. , Arianespace had launched more than 850 satellites in 287 launches over 41 years. The first commercial flight managed by the new entity was Spacenet F1 launched on 23 May 1984. Arianespace uses the Guiana Space Centre in French Guiana as its main launch site. Through shareholding in Starsem, it can also offer commercial Soyuz launches from the Baikonur spaceport in Kazakhstan. It has its headquarters in Évry-Courcouronnes, Essonne, France. History The formation of Arianespace SA is closely associated with the desire of several European nations to pursue joint collaboration in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
