JCSAT-4A: Difference between revisions
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{{Infobox spaceflight |
{{Infobox spaceflight |
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| name |
| name = JCSAT-4A |
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| names_list |
| names_list = '''JCSAT-6''' (order to Feb 1999)<br/>'''JCSAT-4A''' (Feb 1999 onward) |
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'''JCSAT-4A''' (Feb 1999 onward) |
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| image_caption = |
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| image_size = 300px |
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| mission_type |
| mission_type = [[Communications satellite|Communications]] |
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| operator |
| operator = [[SKY Perfect JSAT Group]] |
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| COSPAR_ID = 1999-006A |
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| SATCAT = 25630 |
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| website = |
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| mission_duration |
| mission_duration = 14.5 years (planned) <br/> {{time interval|February 16, 1999 01:45:26}} (elasped) |
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| spacecraft = JCSAT-6 |
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| spacecraft_type = [[JSAT (satellite constellation)|JCSAT]] |
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| spacecraft_bus = [[HS-601]] |
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| launch_mass = {{convert|2900|kg}} |
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| launch_mass = {{convert|2900|kg}} |
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| launch_date |
| launch_date = 16 February 1999, 01:45:26 [[Coordinated Universal Time|UTC]] |
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| launch_rocket |
| launch_rocket = [[Atlas II|Atlas IIAS]] (AC-152) |
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| launch_site |
| launch_site = [[Cape Canaveral Space Force Station|Cape Canaveral]], [[Cape Canaveral Launch Complex 36|LC-36A]] |
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| launch_contractor |
| launch_contractor = [[International Launch Services]] (ILS) |
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| entered_service = |
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| entered_service = |
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| disposal_type = |
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| deactivated = <!-- {{end-date|[insert date here]}} --> |
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| deactivated = |
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| orbit_reference = [[Geocentric orbit]] |
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| orbit_regime = [[Geostationary orbit]] |
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| orbit_regime = [[Geostationary orbit|Geostationary]] |
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| orbit_periapsis = <!-- {{convert|35785|km|mi}}<ref name="JSR-SC"/> --> |
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| orbit_apoapsis = <!-- {{convert|35807|km|mi}}<ref name="JSR-SC">{{cite web|url=http://www.planet4589.org/space/log/satcat.txt|title=Satellite Catalog|last=McDowell|first=Jonathan|publisher=Jonathan's Space Page|accessdate=2009-08-09}}</ref> --> |
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| orbit_inclination = <!-- 0 degrees --> |
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| orbit_period = <!-- 24 hours --> |
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| trans_band |
| trans_band = 32 [[Ku band|K<sub>u</sub> band]] |
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| trans_frequency |
| trans_frequency = |
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| trans_bandwidth |
| trans_bandwidth = |
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| trans_capacity |
| trans_capacity = |
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| trans_coverage |
| trans_coverage = Japan |
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| trans_TWTA |
| trans_TWTA = |
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| insignia = |
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| insignia_caption = |
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| insignia_size = 200px |
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| programme = [[JSAT (satellite constellation)|JCSAT constellation]] |
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'''JCSAT-4A''', |
'''JCSAT-4A''', designated '''JCSAT-6''' before launch, is a Japanese geostationary [[communications satellite]] which is operated by [[JSAT Corporation]] (now [[SKY Perfect JSAT|SKY Perfect JSAT Group]]). It is positioned in [[geostationary orbit]] at a [[longitude]] of 124° East, from where it is used to provide broadcasting and corporate network communications to Japan.<ref>{{cite web |url=http://www.sptvjsat.com/en/business/satellite/list/jcsat_4a.html|title=JCSAT-4A|publisher=Sky Perfect JSAT|access-date=2009-08-08|url-status=dead|archive-url=https://web.archive.org/web/20090713034304/http://www.sptvjsat.com/en/business/satellite/list/jcsat_4a.html|archive-date=2009-07-13}}</ref> |
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== Spacecraft description == |
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JCSAT-6 was constructed by Hughes, based on the [[HS-601]] [[satellite bus]]. It is equipped with 32 |
JCSAT-6 was constructed by Hughes, based on the [[HS-601]] [[satellite bus]]. It is equipped with 32 [[Ku band|Ku-band]] [[Transponder (satellite communications)|transponder]]s, and at launch it had a mass of {{cvt|2900|kg}}, with an expected operational lifespan of fourteen and a half years.<ref name="UCS">{{cite web|url=http://www.ucsusa.org/nuclear_weapons_and_global_security/space_weapons/technical_issues/ucs-satellite-database.html|title=UCS Satellite Database|publisher=Union of Concerned Scientists|date=2009-07-01|access-date=2009-08-08}}</ref><ref name="GSP">{{cite web |url=http://space.skyrocket.de/doc_sdat/jcsat-5.htm|title=JCSat 5, 6|first=Gunter|last=Krebs|publisher=Gunter's Space Page|access-date=2009-08-08}}</ref> |
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== Launch == |
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It was launched atop an [[Atlas II|Atlas IIAS]] |
It was launched atop an [[Atlas II|Atlas IIAS]] [[launch vehicle]] flying from [[Cape Canaveral Launch Complex 36|Launch Complex 36A]] at the [[Cape Canaveral Space Force Station|Cape Canaveral Air Force Station]]. The launch occurred at 01:45:26 [[Coordinated Universal Time|UTC]] on 16 February 1999,<ref name="JSR-LL">{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|last=McDowell |first=Jonathan|publisher=Jonathan's Space Report|date=14 March 2021|access-date=20 March 2021}}</ref> and successfully placed JCSAT-6 into a [[geostationary transfer orbit]]. From this orbit, the satellite raised itself into a geostationary orbit using an [[R-4D]] [[Apogee kick motor|apogee motor]].<ref name="EA">{{cite web|url=http://www.astronautix.com/project/jcsat.htm|archive-url=https://web.archive.org/web/20020829020459/http://astronautix.com/project/jcsat.htm|url-status=dead|archive-date=29 August 2002|title=JCSAT|publisher=Encyclopedia Astronautica|last=Wade |first=Mark|access-date=2009-08-08}}</ref> The final burn to complete its insertion into geosynchronous orbit occurred on 1 March 1999.<ref name="GSOHist">{{cite web |url=http://planet4589.org/space/log/geo.date|title=Index|work=Geostationary Orbit Catalog|last=McDowell|first=Jonathan|publisher=Jonathan's Space Report|access-date=2009-08-08|archive-url=https://web.archive.org/web/20100406015538/http://www.planet4589.org/space/log/geo.date|archive-date=2010-04-06|url-status=dead}}</ref> |
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==See also== |
== See also == |
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{{Portal|Spaceflight}} |
{{Portal|Spaceflight}} |
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*[[1999 in spaceflight]] |
* [[1999 in spaceflight]] |
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==References== |
== References == |
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{{Reflist|30em}} |
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{{Orbital launches in 1999}} |
{{Orbital launches in 1999}} |
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{{JCSAT}} |
{{JCSAT}} |
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{{DEFAULTSORT:Jcsat-4a}} |
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[[Category:Spacecraft launched in 1999]] |
[[Category:Spacecraft launched in 1999]] |
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[[Category:Satellites using the BSS-601 bus]] |
[[Category:Satellites using the BSS-601 bus]] |
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[[Category:Communications satellites of Japan]] |
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[[Category:Satellites of Japan]] |
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{{communications-satellite-stub}} |
{{communications-satellite-stub}} |
Latest revision as of 23:24, 25 January 2023
Names | JCSAT-6 (order to Feb 1999) JCSAT-4A (Feb 1999 onward) |
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Mission type | Communications |
Operator | SKY Perfect JSAT Group |
COSPAR ID | 1999-006A |
SATCAT no. | 25630 |
Mission duration | 14.5 years (planned) 25 years, 2 months and 19 days (elasped) |
Spacecraft properties | |
Spacecraft | JCSAT-6 |
Spacecraft type | JCSAT |
Bus | HS-601 |
Manufacturer | Hughes |
Launch mass | 2,900 kilograms (6,400 lb) |
Start of mission | |
Launch date | 16 February 1999, 01:45:26 UTC |
Rocket | Atlas IIAS (AC-152) |
Launch site | Cape Canaveral, LC-36A |
Contractor | International Launch Services (ILS) |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Geostationary orbit |
Longitude | 124° East |
Transponders | |
Band | 32 Ku band |
Coverage area | Japan |
JCSAT-4A, designated JCSAT-6 before launch, is a Japanese geostationary communications satellite which is operated by JSAT Corporation (now SKY Perfect JSAT Group). It is positioned in geostationary orbit at a longitude of 124° East, from where it is used to provide broadcasting and corporate network communications to Japan.[1]
Spacecraft description[edit]
JCSAT-6 was constructed by Hughes, based on the HS-601 satellite bus. It is equipped with 32 Ku-band transponders, and at launch it had a mass of 2,900 kg (6,400 lb), with an expected operational lifespan of fourteen and a half years.[2][3]
Launch[edit]
It was launched atop an Atlas IIAS launch vehicle flying from Launch Complex 36A at the Cape Canaveral Air Force Station. The launch occurred at 01:45:26 UTC on 16 February 1999,[4] and successfully placed JCSAT-6 into a geostationary transfer orbit. From this orbit, the satellite raised itself into a geostationary orbit using an R-4D apogee motor.[5] The final burn to complete its insertion into geosynchronous orbit occurred on 1 March 1999.[6]
See also[edit]
References[edit]
- ^ "JCSAT-4A". Sky Perfect JSAT. Archived from the original on 13 July 2009. Retrieved 8 August 2009.
- ^ "UCS Satellite Database". Union of Concerned Scientists. 1 July 2009. Retrieved 8 August 2009.
- ^ Krebs, Gunter. "JCSat 5, 6". Gunter's Space Page. Retrieved 8 August 2009.
- ^ McDowell, Jonathan (14 March 2021). "Launch Log". Jonathan's Space Report. Retrieved 20 March 2021.
- ^ Wade, Mark. "JCSAT". Encyclopedia Astronautica. Archived from the original on 29 August 2002. Retrieved 8 August 2009.
- ^ McDowell, Jonathan. "Index". Geostationary Orbit Catalog. Jonathan's Space Report. Archived from the original on 6 April 2010. Retrieved 8 August 2009.