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Statements

Subject Item
dbr:Inmarsat-4A_F4
rdf:type
yago:Action100037396 dbo:SocietalEvent yago:Event100029378 yago:Change100191142 yago:Abstraction100002137 wikidata:Q1656682 owl:Thing dbo:ArtificialSatellite yago:Spaceflight100313502 schema:Event yago:Voyage100312553 yago:YagoPermanentlyLocatedEntity yago:Journey100306426 dbo:SpaceMission yago:Motion100279835 dbo:Event wikidata:Q2133344 n25:Event yago:Act100030358 yago:PsychologicalFeature100023100 yago:Travel100295701
rdfs:label
Inmarsat-4A F4 Alphasat Inmarsat-4A F4 Alphasat Alphasat Alphasat I-XL
rdfs:comment
Inmarsat-4A F4, juga dikenal sebagai Alphasat dan Inmarsat-XL, adalah sebuah satelit komunikasi geostasioner Inggris yang dioperasikan oleh Inmarsat dalam kemitraan dengan European Space Agency. Diluncurkan pada tahun 2013, digunakan untuk menyediakan komunikasi ke Afrika dan sebagian Eropa dan Asia. O Alphasat, também conhecido por Inmarsat-4A F4 (originalmente denominado de Alphasat I-XL ou Inmarsat XL), é um satélite de comunicação geoestacionário construído pelas empresa EADS Astrium e Thales Alenia Space. Ele está localizado na posição orbital de 25 graus de longitude leste e é operado em conjunto pela Agência Espacial Europeia (ESA) com a Inmarsat. O satélite foi baseado na plataforma e sua expectativa de vida útil é de 15 anos. Alphasat is de grootste communicatiesatelliet die ooit gebouwd werd en is het grootste private ruimteproject dat ooit in Europa verwezenlijkt werd. Het is opgezet als uitbreiding van het globale mobiele telecommunicatienetwerk van Inmarsat (Verenigd Koninkrijk). ESA en Inmarsat gingen een samenwerkingsverband aan voor de verwezenlijking van Alphasat. Alphasat wordt gebouwd door Astrium. De nieuwe generatie geomobiele apparatuur geeft toegang tot de L-band en laat gegevenstransmissie aan hoge snelheid toe voor lucht-, zee- en landtoepassingen in Europa, Azië, Afrika en het Midden-oosten. Inmarsat-4A F4, also known as Alphasat and Inmarsat-XL, is a large geostationary communications I-4 satellite operated by United Kingdom-based Inmarsat in partnership with the European Space Agency. Launched in 2013, it is used to provide mobile communications to Africa and parts of Europe and Asia. Alphasat, chiamato anche Inmarsat-4A F4, è un satellite per telecomunicazioni di proprietà congiunta di Inmarsat e dell'Agenzia Spaziale Europea. È stato lanciato nel 2013 e viene utilizzato per telecomunicazioni in Africa e parte di Europa e Asia. Il lancio è stato operato da Arianespace con un lanciatore Ariane 5 (numero del lancio VA-214), che trasportava anche il satellite in un'. Il lancio è avvenuto alle 19.54.07 UTC del 25 luglio 2013 dal Centre spatial guyanais di Kourou, nella Guyana francese. La separazione del satellite dal lanciatore è avvenuta circa 27 minuti dopo. Alphasat I-XL, jetzt Inmarsat-4A F4, ist der Name eines Kommunikationssatelliten, der im Auftrag von Inmarsat und der ESA von einem europäischen Firmenkonsortium unter Führung von Thales Alenia Space (abk. TAS) und Astrium gebaut wurde. Er ging auf der Orbitalposition 25° Ost über dem Äquator in Dienst.
foaf:name
Inmarsat-4A F4
dbp:name
Inmarsat-4A F4
foaf:depiction
n23:Alphasat_bourget_YC2.jpg
dcterms:subject
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dbo:wikiPageID
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dbo:wikiPageRevisionID
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dbo:thumbnail
n23:Alphasat_bourget_YC2.jpg?width=300
dbp:apsis
gee
dbp:cosparId
2013
dbp:imageCaption
Full scale mockup Alphasat at Le Bourget Airshow 2013
dbp:launchContractor
dbr:Arianespace
dbp:launchDate
0001-07-25
dbp:launchRocket
Ariane 5ECA VA-214
dbp:launchSite
dbr:Guiana_Space_Centre dbr:ELA-3
dbp:manufacturer
dbr:EADS_Astrium dbr:Thales_Alenia_Space
dbp:missionDuration
0001-07-25 4.73364E8
dbp:missionType
dbr:Communications_satellite Technology
dbp:operator
dbr:Inmarsat dbr:European_Space_Agency
dbp:orbitInclination
0.14
dbp:orbitPeriod
86112.0
dbp:orbitReference
dbr:Geocentric_orbit
dbp:orbitRegime
dbr:Geostationary_orbit
dbp:satcat
39215
dbp:spacecraftBus
dbr:Alphabus
dbo:abstract
Inmarsat-4A F4, also known as Alphasat and Inmarsat-XL, is a large geostationary communications I-4 satellite operated by United Kingdom-based Inmarsat in partnership with the European Space Agency. Launched in 2013, it is used to provide mobile communications to Africa and parts of Europe and Asia. Inmarsat-4A F4 has been constructed by EADS Astrium and Thales Alenia Space based on the Alphabus satellite bus. It was the first Alphabus spacecraft to be launched, and as such it carries several experimental communications systems in addition to its commercial payload. The spacecraft had a launch mass of 6,649 kilograms (14,659 lb), and is expected to operate for at least fifteen years. Arianespace had been contracted to launch Inmarsat-4A F4, with an Ariane 5ECA rocket, flight number VA-214, delivering it and INSAT-3D into geosynchronous transfer orbit. The rocket lifted off from ELA-3 at Kourou at 19:54:07 UTC on 25 July 2013, with Inmarsat-4A F4 separating from the rocket around 27 minutes later. The spacecraft operates in a geostationary orbit at a longitude of 25 degrees east. As of 29 October 2013, it is in an orbit with a perigee of 35,771 kilometres (22,227 mi), an apogee of 35,771 kilometres (22,227 mi) and 0.14 degrees inclination to the equator. The orbit had a semimajor axis of 42,157.20 kilometres (26,195.27 mi) and eccentricity of 0.0003552, giving it an orbital period of 1,435.75 minutes, or 23.92 hours. O Alphasat, também conhecido por Inmarsat-4A F4 (originalmente denominado de Alphasat I-XL ou Inmarsat XL), é um satélite de comunicação geoestacionário construído pelas empresa EADS Astrium e Thales Alenia Space. Ele está localizado na posição orbital de 25 graus de longitude leste e é operado em conjunto pela Agência Espacial Europeia (ESA) com a Inmarsat. O satélite foi baseado na plataforma e sua expectativa de vida útil é de 15 anos. Alphasat is de grootste communicatiesatelliet die ooit gebouwd werd en is het grootste private ruimteproject dat ooit in Europa verwezenlijkt werd. Het is opgezet als uitbreiding van het globale mobiele telecommunicatienetwerk van Inmarsat (Verenigd Koninkrijk). ESA en Inmarsat gingen een samenwerkingsverband aan voor de verwezenlijking van Alphasat. Alphasat wordt gebouwd door Astrium. De nieuwe generatie geomobiele apparatuur geeft toegang tot de L-band en laat gegevenstransmissie aan hoge snelheid toe voor lucht-, zee- en landtoepassingen in Europa, Azië, Afrika en het Midden-oosten. Alphasat is ook een test voor het platform Alphabus. Alphabus is een platform met een groot elektrisch vermogen waarop diverse apparaten kunnen bevestigd worden in toekomstige missies. Zo zijn er bijvoorbeeld vier Technology Demonstration Payloads (TDP) die toelaten testen in verband met telecommunicatie uit te voeren in het kader van ESA’s Advanced Research in Telecommunications Systems (ARTES) programma. Dit is een programma dat onderzoek doet op het vlak van telecommunicatie om bandbreedten zo efficiënt mogelijk te gebruiken. Alphasat in cijfers: * Lanceerdatum: 25 juli 2013 * Lanceergewicht: 6,6 ton (3,5 ton nuttige massa) * Zonnecellen: spanwijdte 40 meter * Elektrisch vermogen: 12 kW * Platform: Alphabus * Positie: geostationaire baan 25°oost * Draagraket: Ariane 5 ECA * Lanceerbasis: ruimtecentrum Kourou, Frans Guyana * Operationele leeftijd: 15 jaar Inmarsat-4A F4, juga dikenal sebagai Alphasat dan Inmarsat-XL, adalah sebuah satelit komunikasi geostasioner Inggris yang dioperasikan oleh Inmarsat dalam kemitraan dengan European Space Agency. Diluncurkan pada tahun 2013, digunakan untuk menyediakan komunikasi ke Afrika dan sebagian Eropa dan Asia. Alphasat I-XL, jetzt Inmarsat-4A F4, ist der Name eines Kommunikationssatelliten, der im Auftrag von Inmarsat und der ESA von einem europäischen Firmenkonsortium unter Führung von Thales Alenia Space (abk. TAS) und Astrium gebaut wurde. Er ging auf der Orbitalposition 25° Ost über dem Äquator in Dienst. Alphasat, chiamato anche Inmarsat-4A F4, è un satellite per telecomunicazioni di proprietà congiunta di Inmarsat e dell'Agenzia Spaziale Europea. È stato lanciato nel 2013 e viene utilizzato per telecomunicazioni in Africa e parte di Europa e Asia. Il satellite è stato costruito da Astrium e Thales Alenia Space ed è basato sulla piattaforma Alphabus. È stato il primo satellite della serie Alphabus ad essere lanciato, perciò trasporta svariati sistemi di comunicazione sperimentali, oltre al suo carico utile commerciale. La massa al lancio era di 6 649 kg e ha una durata prevista di almeno 15 anni. Il lancio è stato operato da Arianespace con un lanciatore Ariane 5 (numero del lancio VA-214), che trasportava anche il satellite in un'. Il lancio è avvenuto alle 19.54.07 UTC del 25 luglio 2013 dal Centre spatial guyanais di Kourou, nella Guyana francese. La separazione del satellite dal lanciatore è avvenuta circa 27 minuti dopo. Il satellite si trova in orbita geostazionaria alla longitudine di 25° est. Il 29 ottobre 2013 si trovava in un'orbita con un perigeo di 35 771 km, un apogeo di 35 801 km e un'inclinazione di 0,14° sull'equatore. L'orbita ha semiasse maggiore di 42 157,20 km ed eccentricità di 0,0003552, il che dà un periodo orbitale di 1 435,75 minuti, o 23,92 ore.
dbp:orbitEpoch
0001-10-29
dbp:orbitLongitude
25
gold:hypernym
dbr:Satellite
prov:wasDerivedFrom
wikipedia-en:Inmarsat-4A_F4?oldid=1105602123&ns=0
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5478.75
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5537
dbo:cosparId
2013-038A
dbo:launchDate
2013-07-25
dbo:missionDuration
473364000.0
dbo:satcat
39215
dbo:launchVehicle
dbr:Ariane_5
dbo:manufacturer
dbr:Thales_Alenia_Space dbr:EADS_Astrium
dbo:operator
dbr:Inmarsat dbr:European_Space_Agency
dbo:type
dbr:Communications_satellite
foaf:isPrimaryTopicOf
wikipedia-en:Inmarsat-4A_F4