JSAT Corporation

JSAT Corporation (JSAT) was the first private Japanese satellite operator, which owned the JSAT satellites, as well as operated and partially owned the N-Star with NTT DoCoMo. Its origins can be traced to the funding of Japan Communications Satellite Company (JCSAT) and Satellite Japan Corporation in 1985. Both companies merged into Japan Satellite Systems Inc. in 1993. In 2000 the company was renamed as JSAT Corporation and was listed in the First Section of the . In September 1, 2008, the company was merged into the SKY Perfect JSAT Group.

With the opening of the Japanese satellite communications market to private investment, Japan Communications Satellite Company (JCSAT) and Satellite Japan Corporation were founded in 1985. On June of the same year, JCSAT awarded an order to Hughes Space and Communications for two identical satellites, JCSAT-1 and JCSAT-2, based on the spin-stabilized HS-393 satellite bus. JCSAT-1, the first commercial Japanese communications satellite, was successfully launched aboard an Ariane-44LP on March 6, 1989. It's brother, was launched aboard a Commercial Titan III on Januar 1, 1990.

In 1992 N-Star was created as a joint venture between JSAT, NTT, NTT Communications and NTT DoCoMo for the supply of these latter two WIDESTAR satellite telephone and data packet service. JSAT would handle the satellite side of business and NTT DoCoMo would operate the payload.

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. They would be "switchboards in the sky" having S band, C band, K_a band and K_u band payload.