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TerreStar-1 is an American communications satellite which was operated by TerreStar Corporation. It was constructed by Space Systems/Loral, based on the LS-1300S bus, and carries E/F band (IEEE S band) transponders which will be used to provide mobile communications to North America. The signals are transmitted by an 18-metre (59 ft) reflector on the satellite.[2] It had a launch mass of 6,910 kilograms (15,230 lb),[3] making it the second most massive single satellite launched into a geosynchronous transfer orbit, and the second largest commercial communications satellite ever built. Its record as the most massive communication satellite was surpassed by Telstar 19V launched on Falcon 9 on July 21, 2018, with a mass of 7,076 kilograms (15,600 lb).[4]

This article needs to be updated. (June 2016)

TerreStar-1

Mission type	Communication
Operator	TerreStar Corporation
COSPAR ID	2009-035A
SATCAT no.	35496
Mission duration	15 years
Spacecraft properties
Bus	LS-1300S
Manufacturer	Space Systems Loral
Launch mass	6,910 kilograms (15,230 lb)
Start of mission
Launch date	1 July 2009, 17:52 (2009-07-01UTC17:52Z) UTC
Rocket	Ariane 5ECA
Launch site	Kourou ELA-3
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	111° West
Perigee altitude	35,778 kilometers (22,231 mi)
Apogee altitude	35,806 kilometers (22,249 mi)
Inclination	4.00 degrees
Period	23.93 hours
Epoch	21 January 2014, 09:03:45 UTC[1]
Transponders
Band	E/F-band
Coverage area	Canada United States

TerreStar was launched at 17:52 GMT on July 1, 2009,[5] during a two-hour launch window that opened at 16:13.[6] The launch occurred towards the end of the window due to bad weather in the first hour, followed by two aborted countdowns for launch attempts scheduled at 17:12 and 17:34. The launch was conducted by Arianespace, and used an Ariane 5ECA carrier rocket, flying from ELA-3 at the Guiana Space Centre. After launch, the satellite separated from the carrier rocket into a geosynchronous transfer orbit. It will subsequently raise itself into geostationary orbit by means of its onboard propulsion system. It will be positioned at 111° West longitude, and is expected to operate for 15 years.[3] A second satellite, TerreStar-2 (now EchoStar XXI), is currently under construction and will be used as a ground spare per the Federal Communications Commission guidelines.[3]

Following TerreStar's filing for Chapter 11 bankruptcy, a movement had been formed by the NGO A Human Right to purchase TerreStar-1 and to use it to provide free basic Internet access to developing countries. The team was looking for US$150,000 in donations to put the first phase of their plan into action.[7] However, after successfully bidding $1.375 billion for the acquisition of the TerreStar-1 satellite in a bankruptcy-court auction[8] Dish Network on August 22, 2011 asked the Federal Communications Commission to let the company use the wireless spectrum of TerreStar to offer its own wireless broadband service.[9]

References

External links

• TerreStar Corporation Archived 2009-07-04 at the Wayback Machine
• TerreStar Networks
• NSSDC SPACEWARN Bulletin - TerreStar 1 - 2009-035A
• Buy This Satellite Project
• A Human Right

На других языках

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[de] EchoStar T1

EchoStar T1 (vormals TerreStar-1) ist ein kommerzieller Kommunikationssatellit, der vom US-amerikanischen Satellitenbetreiber DirecTV betrieben wird.

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- [en] TerreStar-1

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[es] TerreStar 1

TerreStar 1 es un satélite de comunicaciones estadounidense lanzado el 1 de julio de 2009 a las 19:52 CEST por un Ariane 5 ECA desde el puerto espacial de Kourou, en la Guayana Francesa, hacia una órbita geoestacionaria. Es el satélite de comunicaciones más grande lanzado hasta la fecha y el 31.eɽ lanzamiento consecutivo exitoso de un Ariane 5.

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[ru] TerreStar-1

TerreStar-1 — американский телекоммуникационный спутник корпорации TerreStar Corporation. Создан в Space Systems/Loral на базе LS-1300S, имеет транспондеры диапазонов E/F (IEEE S band, частоты 2.00-2.01 ГГц и 2.19-2.20 ГГц[1]) и будет обслуживать мобильные коммуникации в Северной Америке. Используется протокол GMR-3G[1]. Сигналы передаются при помощи 18 метрового складного отражателя[2] Стартовая масса спутника 6910 кг,[3] что делало его самым тяжелым спутником, запущенным на геостационарную орбиту, и самым большим коммерческим спутником[4]. Предыдущие два рекорда принадлежат компании ICO и спутнику G-1 2008-го года (6634 кг)[5]. Рекорд массы продержался чуть менее 9 лет и двух месяцев и перешёл к Telstar 19V, запущенному 22 июля 2018 года.

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