TheJSAT constellation is acommunication andbroadcastingsatellite constellation formerly operated byJSAT Corporation and currently bySKY Perfect JSAT Group. It has become the most important commercial constellation in Japan, and fifth in the world. It has practically amalgamated all private satellite operators in Japan, with onlyB-SAT left as a local competitor.[1][non-primary source needed]
JSAT began in 1985, with the opening by theGovernment of Japan, of the communication markets in Japan and the founding ofJapan Communications Satellite Company,Satellite Japan Corporation,Space Communications Corporation. It grew by own investment, mergers and acquisitions of the parent companies. As of August 2016, it includes the fleets of three previously mentioned companies,Horizons Satellite andNTT DoCoMo and theDSN military network.[1]
SKY Perfect JSAT Group has gone through some significant mergers and acquisition and theJSAT constellation has grown accordingly. It has practically amalgamated all private satellite operators in Japan, with onlyB-SAT left as a competitor. Since these mergers were the result of the opening of the communication markets in Japan, that growth does not mean that it has monopolised the segment, but rather is the go-to company for space segment operation.[1]
During its history, the JSAT network has absorbed a series of fleets andconstellations. Some are core constellations, some are operation for third parties and some are joint ventures. As of August 2016, the current configuration of the JSAT fleet is this:[2]
With the opening of the Japanese satellite communications market to private investment,Japan Communications Satellite Company (JCSAT) andSatellite Japan Corporation were founded in 1985.[1][3] In June of the same year, JCSAT awarded an order toHughes Space and Communications for two identical satellites,JCSAT-1 andJCSAT-2, based on thespin-stabilizedHS-393satellite bus.[4] JCSAT-1, the first commercial Japanese communications satellite, was successfully launched aboard anAriane-44LP on 6 March 1989. Its brother (JCSAT-2), was launched aboard aCommercial Titan III on 1 January 1990.[4]
On 1993, Japan Communications Satellite Company and Satellite Japan Corporation merged to form Japan Satellite Systems Inc. (JCSAT).[1] That same year, JCSAT orderedJCSAT-3, a third satellite from Hughes, using theHS-601 platform.[5] In 1995, JCSAT obtained a license for international service, and thus became a regional operator.[1] On 29 August 1995, anAtlas IIAS successfully launched JCSAT-3 into orbit. In December 1995, JCSAT ordered a fourth satellite,JCSAT-4, with the same manufacturer and platform as JCSAT-3. On 17 February 1997, JCSAT-4 was renamedJCSAT-R after being put in orbit by an Atlas IIAS.[5]
In June 1996, JCSAT orderedJCSAT-5, another HS-601-based satellite, and the twinJCSAT-6 in December 1996, from Hughes.[6]
By September 1997, both JCSAT and Space Communications Corporation (SCC) had requested the 110° East position.[7] The Japanese government made both companies share the 110° E position, and thus both made a joint order in November 1998 forN-SAT-110 fromLockheed Martin.[7] It was also calledJCSAT-7 by JCSAT, andSuperbird-5 by SCC.[8] On 2 December 1998, anAriane-44P successfully orbitedJCSAT-5, which became JCSAT-1B. JSAT-6 was rechristened asJCSAT-4A after successfully being injected in its transfer orbit by anAtlas IIAS on 16 February 1999.[6]
In 2000, the company name was changed toJSAT Corporation, and was listed on the First Section of theTokyo Stock Exchange.[1] In April of that year, JSAT orderedJCSAT-8 fromBoeing Satellite Development Center (which had acquired the HS-601 business from Hughes), to replaceJCSAT-2 at the 154° East slot.[9]N-SAT-110 was successfully launched on 6 October 2000 by anAriane 42L, at which point it was renamedJCSAT 110 andSuperbird-D.[8][10]
AnAriane 44L successfully launched JCSAT-8 on 28 March 2002 fromCentre Spatial Guyanais. Once successfully deployed, it was renamedJCSAT-2A.[9]
JSAT switched satellite suppliers again and, on 30 April 2003, awarded an order forJCSAT-9 toLockheed Martin Space Systems and itsA2100AXS platform. A hybrid satellite with 20C-band, 20Ku-band, and 1S-band transponders, it was expected for launch in 2005 for the 132° East slot.[11][12] A year later, on 20 April 2004, JSAT ordered a second satellite from Lockheed,JCSAT-10. Based on the A2100AX platform, it would have a C-band and Ku-band payload and was expected to occupy the 128° East slot after its planned 2006 launch.[13]
On 3 October 2005, JSAT ordered a third A2100-based satellite fromLockheed Martin,JCSAT-11. It would also have a C-band and Ku-band payload, and would be launched in 2007 to act as a backup for the whole JSAT fleet.[14]
During 2006, JSAT successfully launched two satellites. On 12 April 2006, aZenit-3SL successfully orbited JCSAT-9 from a platform on thePacific Ocean. JSAT had leased some transponders toNTT DoCoMo to be used asN-STAR d.[15] Once in its 132° East orbital position, it was known asJCSAT 5A andN-STAR d. Then, on 11 October 2006, anAriane 5 ECA launchedJCSAT-10 alongSyracuse-3B into a transfer orbit. Upon successful deployment at 128° East longitude, it was renamedJCSAT-3A.[16]
On 1 May 2007, Intelsat put the order for theSTAR-2-basedIntelsat 15 satellite toOrbital Sciences.[17] In a business deal, five of its 22 Ku-band transponders were sold to JSAT. Under this arrangement, Intelsat-15 becameJCSAT-85 for the JSAT payload, since it was to be positioned at the 85° E longitude.[18]
The almost 19-year streak of successful JCSAT launches was ended when aProton-M/Briz-M failed to orbitJCSAT-11 on 5 September 2007. A damaged pyro firing cable on the interstage truss prevented the second stage from controlling its direction, and the rocket and its payload crashed into the Kazakhstan steppes.[19] Being lucky in misfortune, JCSAT-11 was simply an on-orbit backup and thus it had no operational impact on the fleet.[16] The same day of the launch failure, JSAT placed an order with Lockheed Martin for an identical replacement,JCSAT-12, for launch in 2009.[16]
On September 18, 2007, JSAT announced an agreement withB-SAT to jointly procure an hybridbroadcast andcommunication satellite. Thanks to a decision of the Japanese government that effectively lifted a ban on such mixed satellites, both companies would share a spacecraft to act as backup ofJCSAT-110 on the 110°East slot. NamedJCSAT-110R andBSAT-3c, it was to be launched in 2011, and it would be managed by B-SAT.[20] On September 19, 2007, they closed a deal withArianespace for a launch slot with an Ariane 5 for its launch.[21][22]
In March 2008, SCC became a wholly owned subsidiary ofSKY Perfect JSAT Group.[23][1] At the SKY Perfect JSAT board meeting of August 6, 2008, it was resolved to merge SKY Perfect Communications, JSAT Corporation and Space Communications Corporation.[24] This consolidated the Superbird fleet into JSAT and created the fifth satellite operator in the world at the time.[1]
On December 15, 2008, JSAT and B-SAT placed a joint order with Lockheed for another A2100-based satellite. Designated JCSAT-110R by JSAT and BSAT-3c by B-SAT, it was to be launched by an Ariane 5 in the second quarter of 2011. The satellite would have two 12 Ku band payloads, one for each of the owners.[25][26]
On April 16, 2009, JSAT made its seventh order for an A2100-based satellite from Lockheed,JCSAT-13. It would feature 44 Ku band transponders with two steerable antennas for on-orbit reconfiguration. It was to be launched in 2013 for the 124°East slot where it would replaceJCSAT-4A.[27] The next day, April 17, Arianespace announced that they had secured the contract to launch JCSAT-13 on an Ariane 5 ECA.[28]
On August 21, 2009, an Ariane 5 ECA successfully orbited JCSAT-12 along withOptus D3. Upon reaching orbit, JCSAT-12 was renamedJCSAT-RA, which functions as an on-orbit backup.[16] On November 30 of the same year, aZenit-3SLB successfully launched Intelsat-15/JCSAT-85.[18]
On August 6, 2011, JCSAT-110R/BSAT-3c and its launch companionAstra 1N were successfully put in orbit by an Ariane 5 ECA.[26] On May 15, 2012, again on an Ariane 5 ECA, JCSAT-13 andVinasat-2 were launched into orbit. After the launch success, JCAST-13 was renamedJCSAT-4B.[29] After reaching the 124°East, it was commissioned into service on July 10, replacing JCSAT-4A.[30]
On June 11, 2013,SSL announced that it had been awarded a contract by JSAT to manufactureJCSAT-14. It would be a 10 kW satellite with 26 C band and 18 Ku band transponders with 15 years of expected life. It was scheduled for launch in 2015.[31] On January 10, 2014, JSAT announced that it had signed a launch service contract withSpaceX for the launch of JCSAT-14 aboard aFalcon 9 rocket. The expected launch date was the second half of 2015.[32]
In April 2014, SSL announced that it had been awarded a contract by JSAT to manufacture two satellites:JCSAT-15, a 10-kW satellite to replaceN-SAT-110 plus expansion capability,[33] andJCSAT-16, an 8.5-kW satellite with Ku band and Ka band payload to be used as a backup to the existing fleet.[33] On September 8, Arianespace announced that it had signed a launch service contract for the launch of JCSAT-15 aboard an Ariane 5 ECA rocket.[34][35] And on September 10, 2014, JSAT announced that it had signed a second launch service contract with SpaceX for the launch of JCSAT-16 aboard a Falcon 9 rocket.[36]
The June 28, 2015 failure ofFalcon 9 Flight 19 meant a delay of at least six months on the Falcon 9 launches.[37] On February 3, 2016, Lockheed Martin announced that it had been awarded an order forJCSAT-17 for delivery in 2019. Because of its configurableS band payload, it would be able to redirect capacity to concentrate on disaster relief efforts or other high-volume events.[38]
On May 5, 2016, at 05:21 UTC, the Falcon 9 successfully launched JSCAT-14 to ageosynchronous transfer orbit.[37] The rocket's first stage subsequently landed on anautonomous spaceport drone ship. The next day, SSL announced that the satellite had deployed the solar arrays, was in full control, and was performing orbital maneuvers to reach its operational position. Renamed JCSAT-2B, it was on track to reach its 154°East orbital slot.[39][2]
At the scheduled August 14 at 05:26 UTC, SpaceX successfully launched the JCSAT-16 satellite into orbit on aFalcon 9 rocket.[40] While JCSAT-16 was supposed to serve as on-orbit backup at the 124° East longitude position, it will be rushed into service at the 162°East position to replaceSuperbird-B2, a satellite past its design life. OriginallySuperbird-8 was supposed to replace Superbird-B2, but a mishap during transport to the launch site in March 2016 meant that it would be delayed between one and two years.[41][42]
Space Communications Corporation (SCC) was founded in 1985, the same year as the original companies that later formed JSAT.[1] On 1986 SCC ordered four spacecraft fromSpace Systems/Loral,Superbird-A,Superbird-B,Superbird-A1 andSuperbird-B1.[43] SCC was related to theMitsubishi Group, and has been a part of theirkeiretsu.[44]
On June 5, 1989 Superbird-A, the second private communications satellite of Japan was launched aboard anAriane 44L alongDFS Kopernikus-1.[45] On February 22, 1990 Superbird-B was lost when the Ariane 44LP that should have orbited it alongBS-2X failed during launch. Superbird-B1 was completed in just 19 months and successfully launched on February 26, 1992 also aboard an Ariane 44L. The last of the initial batch, Superbird-A1 was launched on December 1 of the same year, thus completing the first phase of deployment of the SCC fleet.[45]
SCC switched satellite suppliers and on 1995 ordered a satellite fromBoeing,Superbird-C.[46][47] On July 28, 1997, Superbird-C was orbited by anAtlas IIAS.[46]
On 1995, SCC obtained a license to offer communication services in the international market and thus became a regional operator.[1] On April 6, 1998, SCC ordered a second satellite from Boeing,Superbird-4. On February 18, 2000Superbird-4 was orbited by an Ariane 44LP, at which point it was renamed as Superbird-B2.[47]
By September 1997, both JSAT and SCC had requested the 110°East position. The Japanese government made them share that position and thus both made in November 1998 a joint order forN-SAT-110 fromLockheed Martin.[7][8] It was also called JCSAT-7 by JSAT and Superbird-5 by SCC, but was later rechristened as JCSAT 110 and Superbird-D once it was on orbit. N-SAT-110 was successfully launched on October 6, 2000 by an Ariane 42L.[8][10]
In September 2001 SCC orderedSuperbird-6 from Boeing. It was launched on April 16, 2004 by an Atlas IIAS that injected in thesupersynchronous orbit specified by the satellite manufacturer, at which point it was named Superbird-A2. But the orbit analysis had failed to take into consideration the influence of the Moon at such high apogees and the perigee started to drop dangerously fast. Most of its propellant had to be spent and the solar panels suffered damage that reduced the power production. It was never commissioned into service.[48]
On November 1, 2005, SCC orders its first satellite to be built in Japan, theSuperbird-7 byMELCO.[49] It was successfully launched alongAMC-21 by anAriane 5 ECA on August 14, 2008, at which time it was renamed as Superbird-C2.[50]
In March 2008, SCC becomes a fully owned subsidiary ofSKY Perfect JSAT Group.[23][1] On the SKY Perfect JSAT board meeting of August 6, 2008, it was resolved to merge SKY Perfect Communications, JSAT Corporation and Space Communications Corporation. The merger would see SKY Perfect absorb JSAT and SCC and both legacy companies dissolved.[24] This consolidated the Superbird fleet into JSAT and created the fifth satellite operator in the world at the time.[1]
N-Star was created as a joint venture between JSAT,NTT,NTT Communications andNTT DoCoMo for the supply of these latter twoWIDESTAR satellite telephone and data packet service.[51] JSAT would handle the satellite side of business and NTT DoCoMo would operate the payload.[52][53]
Two identical satellites were ordered on 1992 fromSpace Systems Loral,N-STAR a andN-STAR b, for 1995 and 1996 on orbit delivery.[54][43] They would be "switchboards in the sky" havingS band,C band,Ka band andKu band payload.[55]
N-STAR a was successfully launched aboard anAriane 44P on August 29, 1995. Its twin, N-STAR b, launched on February 5, 1996, also aboard an Ariane 44P.[56][55] The satellite telephone service was operational in March 1996. In March 2000, the packet communications service was introduced.[57] In March 2000, JSAT received theNTT Communications interest in the N-STAR a and N-STAR b.[58][1]
In October 1999,N-STAR c was ordered by NTT DoCoMo fromLockheed Martin andOrbital Sciences Corporation.[59] Orbital would supply the spacecraft and procure launch services and Lockheed would deliver the payload an act a main contractor.[60] The satellite was successfully launched on July 5, 2002 alongStellat 5 on anAriane 5G.[61]
In August 2003 the JSAT acquired the NTT DoCoMo interest on N-STAR a and N-STAR b, whom then leased them back.[62][63]
JSAT ordered JCSAT-9 fromLockheed Martin, and in May 2003 leased some transponders to NTT DoCoMo to be used as N-STAR d.[15] JCSAT-9 successfully launched on April 12, 2006 aboard aZenit-3SL and was rechristenedJCSAT-5A.[12] It enabled the new serviceWIDESTAR II and deprecated the original N-STAR a and N-STAR b.[57]
During 2010, SKY Perfect JSAT Corporation acquires N-STAR c, completing the transfer of NTT orbital assets and management to JSAT.[1]
JSAT alongNEC,NTT Com andMaeda Corporation formed ajoint venture calledDSN Corporation. On January 15, 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 was aprivate finance initiative, where private funds, management and technical capabilities were used to upgrade and operate theJapanese militaryX band satellite network.[64]
With the new venture in place, the DSN Corporation took on manufacture and launch of two satellites plus making upgrades to the ground control station network. DSN is to operate, manage and maintain the facilities and equipment fromfiscal years 2015 to 2030, at a total estimated program cost of ¥122,074,026,613.[64][non-primary source needed]
The 2013 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 on April 2030. In the event, the 2015 launch was delayed by two years.[65] The second satellite was expected to launch in January 2017,[needs update] starting operations in March 2017. The program and the operations of the second satellite were expected by March 2031.[64]
JSATs role is the procurement and general management of the satellites.[64] The first satellite,DSN-1, is actually an additional payload on one of JSAT's own satellites,Superbird-8.[66] The second satellite,DSN-2 is a dedicated spacecraft.[66][67]
In April 2014, JSAT announced that it had placed an order withMELCO to procure aDS2000model for theSuperbird-8 satellite, intended to replaceSuperbird-B2 and be positioned on the 162°East orbital slot.[68]
In May 2016, JSAT experience a satellite air transportation mishap where a dislodged tarpaulin had blocked a bleed valve on a satellite transport container and the Superbird-8 spacecraft suffered over pressurization damage.[65] This occurred as the completed satellite was on a flight to the launch site; JSAT observed container deformation detected upon landing.[69] The mishap was expected to delay the satellite launch about two years.[65][needs update]
Horizons Satellite was originally an equal sharejoint venture withPanAmSat. It ordered its first satellite,Horizons-1/Galaxy 13 fromBoeing in middle 2001. It was a 4 t (4.4 tons) spacecraft with 24C band and 24Ku bandtransponders. It had a 10 kW power generation capacity and 15 years of expected life. It was successfully launched on October 1, 2003 aboard aZenit-3SL rocket from theOcean Odyssey platform in the Pacific.[70]
On August 30, 2005,Orbital Sciences announced that Horizons Satellite had ordered a small satellite based on theSTAR-2 platform,Horizons-2, for the PanAmSat licensed orbital slot at 74°West. It would carry 20 Ku band transponders, generate 3.5 kW of power, weight around 2.3 t (2.5 tons) and was expected to be launched in 2007.[71]
The late 2005 take over of PanAmSat byIntelsat, did not diminished the relationship and, in fact, strengthened the alliance. On December 21, 2007, Horizons Satellite used anAriane 5 rocket to launch Horizons-2.[72] And, outside of the Horizons Satellite, JCSAT and Intelsat launched the joint satelliteIntelsat 15/JCSAT-85 on November 30, 2009 aboard aZenit-3SLB.[18]
On November 4, 2015, JSAT and Intelsat made a joined statement that they would add a new member to their Horizons joint venture. The satellite, called Horizons 3e, would be based on the IntelsatEpicNG platform, featuring an optimized C band and high throughput Ku band payload it would offer mobility and broadband connectivity services in the Asia-Pacific region.[73] It was expected to use the 169°East orbital slot and launch by the second half of 2018.[74]
This would be the fourth joint satellite, along with the other two Horizons Satellite spacecraft, Horizons-1 and Horizons-2 and the separately co-owned JCSAT-85/Intelsat 15. Since this would be an investment within Horizons, it would not be considered a capital expenditure of the parent companies.[75]
JSAT usually has a name for the satellites orders, and once commissioned in orbit they get rechristened to a new, definitive name. This is a list of the historical satellite projects.
| Project | Name | Bus | Payload | Order | Launch | Launch Vehicle | Launch Result | Launch Mass | Status | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|
| JCSAT-1 | JCSAT-1 | HS-393 | 32Ku band | 1985 | 1989-03-06 | Ariane 44LP | Success | 2,280 kg (5,030 lb) | Decommissioned | First commercial Japanese satellite.[4] |
| Superbird-1 | Superbird-A | SSL 1300 | 23Ku band, 3Ka band and 2X band | 1986 | 1989-06-05 | Ariane 44L | Success | 2,800 kg (6,200 lb) | Decommissioned | Launch withDFS Kopernikus-1.[45] |
| JCSAT-2 | JCSAT-2 | HS-393 | 32Ku band | 1985 | 1990-01-01 | Commercial Titan III | Success | 2,280 kg (5,030 lb) | Decommissioned | Launched withSkynet 4A.[4] |
| Superbird-2 | Superbird-B | SSL 1300 | 23Ku band, 3Ka band and 2X band | 1986 | 1990-02-22 | Ariane 44L | Failure | 2,800 kg (6,200 lb) | Decommissioned | Launched withBS-2X. Launch failure.[45] |
| Superbird-B1 | Superbird-B1 | SSL 1300 | 23Ku band, 3Ka band and 2X band | 1986 | 1992-02-26 | Ariane 44L | Success | 2,800 kg (6,200 lb) | Decommissioned | Launched withArabsat-1C.[45] |
| Superbird-A1 | Superbird-A1 | SSL 1300 | 23Ku band, 3Ka band and 2X band | 1986 | 1992-12-01 | Ariane 42P | Success | 2,800 kg (6,200 lb) | Decommissioned | [45] |
| JCSAT-3 | JCSAT-3 | HS-601 | 12C band and 28Ku band | 1993 | 1995-08-29 | Atlas IIAS | Success | 3,105 kg (6,845 lb) | Decommissioned | [5] |
| N-STAR a | N-STAR a | SSL 1300 | 11Ka band, 8Ku band, 6C band and 4S band | 1992 | 1995-08-29 | Ariane 44P | Success | 3,400 kg (7,500 lb) | Decommissioned | Acquired fromNTT Communications in March 2000.[2][1][56][43] |
| N-STAR b | N-STAR b | SSL 1300 | 11Ka band, 8Ku band, 6C band and 4S band | 1992 | 1996-02-05 | Ariane 44P | Success | 3,400 kg (7,500 lb) | Decommissioned | Acquired fromNTT Communications in March 2000.[2][1][56][43] |
| JCSAT-4 | JCSAT-R | HS-601 | 12C band and 28Ku band | 1995 | 1997-02-17 | Atlas IIAS | Success | 3,105 kg (6,845 lb) | Decommissioned | Sold asIntelsat 26.[5] |
| Superbird-C | Superbird-C | HS-601 | 24Ku band | 1995 | 1997-07-28 | Atlas IIAS | Success | 3,130 kg (6,900 lb) | Decommissioned | [46] |
| JCSAT-5 | JCSAT-1B | HS-601 | 32Ku band | 1996 | 1997-12-02 | Ariane 42P | Success | 2,982 kg (6,574 lb) | Operational at 150°E | Launched withEquator-S. Replacement ofJCSAT-1.[2][6] |
| JCSAT-6 | JCSAT-4A | HS-601 | 32Ku band | 1996 | 1999-02-16 | Atlas IIAS | Success | 2,900 kg (6,400 lb) | Decommissioned | Replacement ofJCSAT-4.[6][76] |
| Superbird-4 | Superbird-B2 | HS-601HP | 23 (+1 steerable)Ku band and 6Ka band | 1998 | 2000-02-18 | Ariane 44LP | Success | 4,057 kg (8,944 lb) | Operational at 162°E | [2][47] |
| JCSAT-7 Superbird-5 | N-SAT-110 JCSAT-110 Superbird-D | A2100AX | 24Ku band | 1998 | 2000-10-06 | Ariane 42L | Success | 4,048 kg (8,924 lb) | Operational at 110°E | Replacement ofJCSAT-3.[2][8] |
| JCSAT-8 | JCSAT-2A | BSS-601 | 16C-band and 16Ku-band | 2000 | 2002-03-29 | Ariane 44L | Success | 2,460 kilograms (5,420 lb) | Operational at 154° E | Replacement ofJCSAT-2.[2][9] |
| N-STAR c | N-STAR c | GEOStar-2 | 1C-band and 20S-band | 1999 | 2002-07-05 | Ariane 5 G | Success | 1,620 kilograms (3,570 lb) | Operational at 136° E | Launched withStellat 5.[2][60][59] |
| Horizons-1 | Horizons-1 Galaxy 13 | HS-601HP | 24Ku-band and 24C-band | 2001 | 2003-10-01 | Zenit-3SL | Success | 4,060 kilograms (8,950 lb) | Operational at 127° E | Co-owned withIntelsat.[2][70] |
| Superbird-6 | Superbird-A2 | HS-601HP | 23Ku-band and 4Ka-band | 2001 | 2004-04-16 | Atlas IIAS | Success | 3,100 kilograms (6,800 lb) | Never commissioned | Injection orbit tosupersynchronous orbit failed to account for lunar influence; satellite spent most of its fuel and suffered damage. Never commissioned.[2][48] |
| JCSAT-9 | JCSAT-5A N-STAR d | A2100AXS | 20C-band, 20Ku-band and 1S-band | 2003 | 2006-04-12 | Zenit-3SLB | Success | 4,401 kilograms (9,703 lb) | Operational at 132° E | Replacement ofJCSAT-5.[2][12][77] |
| JCSAT-10 | JCSAT-3A | A2100AXS | 30Ku-band and 12C-band | 2004 | 2006-08-11 | Ariane 5 ECA | Success | 4,048 kilograms (8,924 lb) | Operational at 128° E | Launched withSyracuse-3B. Replacement ofJCSAT-3.[2][16][78] |
| JCSAT-11 | — | A2100AXS | 30Ku-band and 12C-band | 2005 | 2007-09-05 | Proton-M/Briz-M | Failure | 4,007 kilograms (8,834 lb) | Launch Failure | Was to serve as general backup. Lost at launch.[16] |
| Horizons-2 | Horizons-2 | GEOStar-2 | 20Ku-band | 2005 | 2007-12-21 | Ariane 5 GS | Success | 2,304 kilograms (5,079 lb) | Operational at 85° E | Launched withRascom-QAF 1. Co-owned withIntelsat[2][72] |
| Superbird-7 | Superbird-C2 | DS2000 | 28Ku-band | — | 2008-08-14 | Ariane 5 ECA | Success | 4,820 kilograms (10,630 lb) | Operational at 144° E | Launched withAMC-21.[2][50] |
| JCSAT-12 | JCSAT-RA | A2100AXS | 12C-band and 30Ku-band | 2007 | 2009-08-21 | Ariane 5 ECA | Success | 4,000 kilograms (8,800 lb) | Backup w/o slot | Launched withOptus D3. Replacement ofJCSAT-11.[2][16] |
| JCSAT-85 | JCSAT-85 Intelsat 15 | GEOStar-2 | 22Ku-band | 2007 | 2009-11-30 | Zenit-3SLB | Success | 2,484 kilograms (5,476 lb) | Operational at 85° E | JSAT owns 5 transponders onIntelsat 15.[2][18] |
| JCSAT-110R | JCSAT-110R BSAT-3c | A2100A | two payloads of 12Ku-band each | 2008 | 2011-08-06 | Ariane 5 ECA | Success | 2,910 kilograms (6,420 lb) | Operational at 110° E | Launched withAstra 1N. Co-owned withB-SAT, one payload each. Backup ofN-SAT-110.[2][26][20] |
| JCSAT-13 | JCSAT-4B | A2100AXS | 44Ku-band | 2009 | 2012-06-15 | Ariane 5 ECA | Success | 4,528 kilograms (9,983 lb) | Operational at 124° E | Launched withVinasat-2. ReplacedJCSAT-4A.[2][29] |
| JCSAT-14 | JCSAT-2B | SSL 1300 | 26C-band and 18Ku-band | 2013 | 2016-05-06 | Falcon 9 Full Thrust | Success | 4,696 kilograms (10,353 lb) | Operational at 154° E | ReplacedJCSAT-2A.[2][43][79][31] |
| JCSAT-16 | — | SSL 1300 | Ku-band andKa-band | 2014 | 2016-08-14 | Falcon 9 Full Thrust | Success | 4,600 kilograms (10,100 lb) | Commissioning (In transit to 162° E) | Will act as backup.[43] Temporarily replacing delayedSuperbird-8.[80] |
| JCSAT-15 | — | SSL 1300 | Ku | 2014 | 2016-12-21 | Ariane 5 ECA | Success | 3,400 kilograms (7,500 lb) | Commissioning (In transit to 110° E) | Replacement forN-SAT-110.[43][81] |
| DSN-2 | Kirameki-2 | NEC | X band military payload | — | 2017-01-24 | H-IIA 204 | Success | — | Commissioning (In transit to 162° E | Managed for the DSN Corporation on behalf of the Japanese Military.[67] |
| Superbird-8 | Superbird-B3 DSN-1 Kirameki-1 | DS2000 | Ku-band,Ka-band and anX-band military payload | 2014 | 2018-04-05 | Ariane 5 ECA | Success | — | Success | Replacement forSuperbird-B2.[68] DSN-1 payload for the Japanese military.[66] |
| Horizons-3e | — | BSS-702MP | C band andKu-band | 2015 | 2018-09-25 | Ariane 5 ECA | Success | 6000 kg | Success | Horizons Satellite 3rd satellite. Co-owned withIntelsat, EpicNG architecture. Replacement forIntelsat 805.[73][74][75] |
| JCSAT-17 | — | A2100 | S-band,C-band andKu-band | 2016 | 2020-02-18 | Ariane 5 ECA | Success | — | Success | [82][38] |
| JCSAT-18 | JCSAT-18 / Kacific 1 | BSS-702MP | Ku-band and 56Ka-band | 2017 | 2019-12-16 | Falcon 9 Full Thrust[83] | Success | 6956 kg | Success | [84] |
| Superbird-9 | Superbird-9 | OneSat | Ku band,Ka band | 2021 | 2027 | Starship Cargo | Planned | Unknown | Contracted | [85][86] |
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