It is intended to replaceSuperbird-B2 on the 162° East, offeringKu-band andKa-band communication services to the Japanese market. It will also serve as one of the two plannedX-band military satellites of theDSN network, in this role, it will be known as DSN-1 (Kirameki-1).
Originally intended to be launched by anAriane 5 ECA in the second half offiscal year 2015, a mishap during transport to the launch site in March 2016 meant that it would be delayed up to two years.
JSAT alongNEC,NTT Com andMaeda Corporation formed ajoint venture calledDSN Corporation. On 15 January 2013, DSN Corporation announced that it had closed a contract with theMinistry of Defense to execute the "Program to Upgrade and Operate X-Band Satellite Communications Functions, etc". The contract is aprivate finance initiative, where private funds, management and technical capabilities are used to upgrade and operate theJapanese militaryX-band satellite network.[3] Based on this program, DSN Corporation will manufacture and launch two satellites plus perform the necessary upgrades to ground control stations. It will also operate, manage and maintain the facilities and equipment throughfiscal years 2015 to 2030. The total program cost was estimated at ¥122,074,026,613.[3]
The plan called for the launch of the first satellite in December 2015, with a start of operations in March 2016 and a termination of operations in April 2030. The second satellite was expected to launch in January 2017, starting operations in March 2017. The program and the operations of the second satellite are expected to last until March 2031.[3] JSAT role is the procurement and general management of the satellites.[3] The first satellite,DSN-1, is actually an additional payload on one of JSAT's own satellites,Superbird-8.[4] The second satellite,DSN-2 is a dedicated spacecraft.[4][5]
On 25 April 2014, JSAT announced that it had placed an order withMitsubishi Electric (MELCO) and its satellite platformDS2000 for its Superbird-8 satellite. It would replaceSuperbird-B2 and be positioned on the 162° East orbital slot.[6] On an earning revision, JSAT disclosed that they had confirmed container deformation after Superbird-8 arrived to its launch site.[7] In July 2016, it was published that a 25 May 2016 mishap during air transport had delayed the satellite launch by an estimated two years. A dislodged tarpaulin had blocked the bleed valve on the satellite container and the spacecraft had suffer from over pressurization damage.[2]
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
