Mission type Communication
Operator TerreStar Corporation
COSPAR ID 2009-035A
SATCAT № 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 (2009-07-01T17:52Z) UTC
Rocket Ariane 5ECA
Launch site Kourou ELA-3
Contractor Arianespace
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 111° West
Perigee 35,778 kilometers (22,231 mi)
Apogee 35,806 kilometers (22,249 mi)
Inclination 4.00 degrees
Period 23.93 hours
Epoch 21 January 2014, 09:03:45 UTC[1]
Band E/F-band
Coverage area Canada
United States

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 most massive single satellite launched into a geosynchronous transfer orbit, and the largest commercial communications satellite ever built at the time of its launch,[4] surpassing the previous two records, both set by ICO G-1 in 2008. Terrestar-1 has since been surpassed in size by the launch of SkyTerra in November 2010, formerly known as Mobile Satellite Ventures.

TerreStar was launched at 17:52 GMT on 2009-07-01,[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, is currently under construction and will be used as a ground spare per the Federal Communications Commission guidelines.[3]

Following TerreStar's file 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 $150,000 USD in donations to put the first phase of their plan into action.[5] However after successfully bidding $1.375 billion for the acquisition of the TerreStar-1 satellite in a bankruptcy-court auction[7] 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.[8]


  1. ^ "TERRESTAR 1 Satellite details 2009-035A NORAD 35496". N2YO. 21 January 2014. Retrieved 21 January 2014. 
  2. ^ Bergin, Chris (2009-07-01). "LIVE: Ariane 5 ECA launches with the giant TerreStar-1 satellite". NASASpaceflight.com. Retrieved 2009-07-01. 
  3. ^ a b c Krebs, Gunter. "TerreStar 1, 2". Gunter's Space Page. Retrieved 2009-07-01. 
  4. ^ "Integration of Ariane 5 is completed for its upcoming heavy-lift launch with TerreStar-1". Arianespace. 2009-06-26. Retrieved 2009-07-01. 
  5. ^ a b "A new generation for mobile satellite communications". Spaceflight Now. 2009-07-01. Retrieved 2009-07-01. 
  6. ^ "Ariane 5 soars to another heavy-lift success in lofting the TerreStar-1 mobile communications satellite". Arianespace. 2009-07-01. Retrieved 2009-07-01. 
  7. ^ "Bankruptcy court OKs Dish Network’s buy of TerreStar".  
  8. ^ "Boeing 787 nears debut".  

External links

  • TerreStar Corporation
  • TerreStar Networks
  • NSSDC SPACEWARN Bulletin - TerreStar 1 - 2009-035A
  • Buy This Satellite Project
  • A Human Right

This article was sourced from Creative Commons Attribution-ShareAlike License; GNU Free Documentation License; additional terms may apply; additional licensing terms may not be displayed on the current page, please review the citiational source for the most up to date information. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.

Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.

By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia is a registered trademark of the World Public Library Association, a non-profit organization.