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N-STAR a
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N-STAR a, was a geostationary communications satellite originally ordered by a consortium including NTT DoCoMo and JSAT Corporation, and later fully acquired by JSAT, which was merged into SKY Perfect JSAT Group. It was designed and manufactured by Space Systems/Loral on the SSL 1300 platform.[2] It had a launch weight of 3,400 kg (7,500 lb), and a 10-year design life.[2] Its payload is composed of 6 C-band, 11 Ka-band, 8 Ku-band and 1 S-band transponders.
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History
N-Star was created as a joint venture between JSAT, Nippon Telegraph and Telephone (NTT), NTT Communications and NTT DoCoMo for the supply of these latter two WIDESTAR satellite telephone and data packet service.[5] JSAT would handle the satellite side of business and NTT DoCoMo would operate the payload.[6][7]
Two identical satellites were ordered on 1992 from Space Systems Loral, N-STAR a and N-STAR b, for 1995 and 1996 on orbit delivery.[8][9] They would be "switchboards in the sky" having S-band, C-band, Ka-band and Ku-band payload.[10]
N-STAR a was successfully launched aboard an Ariane 44P on 29 August 1995. Its twin, N-STAR b, launched on 5 February 1996, also aboard an Ariane 44P.[2][10] The satellite telephone service was operational in March 1996. In March 2000, the packet communications service was introduced.[11] In March 2000, JSAT received the NTT Communications interest in the N-STAR a and N-STAR b.[12][13]
In August 2003, the JSAT acquired the NTT DoCoMo interest on N-STAR a and N-STAR b, whom then leased them back.[14][15]
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See also
- JCSAT-5A – Also known as N-STAR d, was the follow on satellite.
References
External links
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