NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Iridium 45

NSSDCA/COSPAR ID: 1997-082A

Description

Iridium 45 was part of a planned commercial communications network comprised of a constellation of 66 LEO spacecraft. The system will use L-Band to provide global communications services through portable handsets. A total of 125 spacecraft will be built by Lockheed for more than $700M. Commercial service is planned to begin in 1998. The system will employ 15-20 ground stations with a master control complex in Landsdowne, VA, a backup in Italy, and a third engineering center in Chandler, AZ. The spacecraft was 3-axis stabilized, with a hydrazine propulsion system. It had 2 solar panels with 1-axis articulation. The system employed L-Band using FDMA/TDMA to provide voice at 4.8 kbps and data at 2400 bps with 16 dB margin. Each satellite had 48 spot beams for Earth coverage and used Ka-Band for crosslinks and ground commanding.

Alternate Names

  • 25104
  • Iridium45
  • 1997-082A

Facts in Brief

Launch Date: 1997-12-20
Launch Vehicle: Delta II 7920
Launch Site: Vandenberg AFB, United States
Mass: 556 kg

Funding Agency

  • Iridium United States

Discipline

  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

 

Personnel

NameRoleOriginal AffiliationE-mail
[USA.gov] NASA Logo - nasa.gov