JCSAT-4A: Difference between revisions

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Does not makes sense to put orbital elements for geostationray orbit. Just use longitude. Also, industry uses Ku band, not J band.
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{{Use American English|date=March 2021}}
{{no epoch}}
{{Use dmy dates|date=March 2021}}
{{Infobox spaceflight
{{Infobox spaceflight
| name = JCSAT-4A (JCSAT-6)
| name = JCSAT-4A
| names_list = '''JCSAT-6''' (order to Feb 1999)<br/>'''JCSAT-4A''' (Feb 1999 onward)
⚫
| image =
| image_caption =
| image =
| image_caption =
| image_size = 300px


| mission_type = [[Communications satellite|Communication]]
| mission_type = [[Communications satellite|Communications]]
| operator = [[JSAT Corporation]]
| operator = [[SKY Perfect JSAT Group]]
| website =
| COSPAR_ID = 1999-006A
| COSPAR_ID = 1999-006A
| SATCAT = 25630
| SATCAT =
| website =
| mission_duration = {{frac|14|1|2}} years (planned)
| mission_duration = 14.5 years (planned) <br/> {{time interval|February 16, 1999 01:45:26}} (elasped)


| spacecraft_bus = [[HS-601]]
| spacecraft = JCSAT-6
| spacecraft_type = [[JSAT (satellite constellation)|JCSAT]]
⚫
| manufacturer = [[Hughes Aircraft|Hughes]]
| dry_mass =
| spacecraft_bus = [[HS-601]]
⚫
| manufacturer = [[Hughes Aircraft Company|Hughes]]
| launch_mass = {{convert|2900|kg}}
| power =
| launch_mass = {{convert|2900|kg}}
| dry_mass =
| dimensions =
⚫
| power =


| launch_date = {{start-date|16 February 1999, 01:45:26|timezone=yes}}&nbsp;UTC
| launch_date = 16 February 1999, 01:45:26 [[Coordinated Universal Time|UTC]]
| launch_rocket = [[Atlas II|Atlas IIAS]]
| launch_rocket = [[Atlas II|Atlas IIAS]] (AC-152)
| launch_site = [[Cape Canaveral Air Force Station|Cape Canaveral]] [[Spaceport Florida Launch Complex 36|SLC-36A]]
| launch_site = [[Cape Canaveral Space Force Station|Cape Canaveral]], [[Cape Canaveral Launch Complex 36|LC-36A]]
| launch_contractor = [[International Launch Services|ILS]]
| launch_contractor = [[International Launch Services]] (ILS)
| entered_service =


| disposal_type =
| entered_service =
| disposal_type =
| deactivated = <!-- {{end-date|[insert date here]}} -->
| deactivated =


| orbit_reference = [[Geocentric orbit]]
⚫
| orbit_epoch =
| orbit_reference = [[Geocentric orbit|Geocentric]]
| orbit_regime = [[Geostationary orbit]]
⚫
| orbit_longitude = 124° East
| orbit_regime = [[Geostationary orbit|Geostationary]]
⚫
| apsis = gee
| orbit_periapsis = <!-- {{convert|35785|km|mi}}<ref name="JSR-SC"/> -->
| 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> -->
| orbit_inclination = <!-- 0&nbsp;degrees -->
| orbit_period = <!-- 24&nbsp;hours -->
⚫
| orbit_longitude = 124° East
| orbit_slot =
⚫
| apsis = <!-- gee -->


| trans_band = 32 [[Ku band|K<sub>u</sub> band]]
| trans_band = 32 [[Ku band|K<sub>u</sub> band]]
| trans_frequency =
| trans_frequency =
| trans_bandwidth =
| trans_bandwidth =
| trans_capacity =
| trans_capacity =
| trans_coverage =
| trans_coverage = Japan
| trans_TWTA =
| trans_TWTA =
⚫
| trans_EIRP =
| trans_HPBW =


| programme = [[JSAT (satellite constellation)|JSAT]]
| insignia =
| insignia_caption =
⚫
| previous_mission =[[JCSAT-1B]]
| insignia_size = 200px
⚫
| next_mission =[[JCSAT-110]]

| programme = [[JSAT (satellite constellation)|JCSAT constellation]]
⚫
| previous_mission = [[JCSAT-1B]]
⚫
| next_mission = [[JCSAT-110]]


}}
}}
'''JCSAT-4A''', previously designated '''JCSAT-6''', is a [[Japan]]ese geostationary [[communications satellite]] which is operated by [[JSAT Corporation]]. 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 Corporation|accessdate=2009-08-08}}</ref>
'''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>


== Spacecraft description ==
JCSAT-6 was constructed by Hughes, based on the [[HS-601]] [[satellite bus]]. It is equipped with 32 J band (IEEE Ku band) [[transponder]]s, and at launch it had a mass of {{convert|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|accessdate=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|accessdate=2009-08-08}}</ref>
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>


== Launch ==
It was launched atop an [[Atlas II|Atlas IIAS]] carrier rocket flying from [[Spaceport Florida Launch Complex 36|Space Launch Complex 36A]] at the [[Cape Canaveral Air Force Station]]. The launch occurred at 01:45:26 GMT 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 Page|accessdate=2009-08-08}}</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 motor.<ref name="EA">{{cite web|url=http://www.astronautix.com/project/jcsat.htm|title=JCSAT|publisher=Encyclopedia Astronautica|last=Wade|first=Mark|accessdate=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 Page|accessdate=2009-08-08}}</ref>
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>


==See also==
== See also ==
{{Portal|Spaceflight}}
*[[1999 in spaceflight]]
* [[1999 in spaceflight]]


==References==
== References ==
{{reflist}}
{{Reflist|30em}}


{{Orbital launches in 1999}}
{{Orbital launches in 1999}}
{{JCSAT}}
{{JCSAT}}


{{DEFAULTSORT:Jcsat-4a}}
[[Category:Spacecraft launched in 1999]]
[[Category:Spacecraft launched in 1999]]
[[Category:Satellites using the BSS-601 bus]]
[[Category:Satellites using the BSS-601 bus]]
[[Category:Communications satellites of Japan]]
[[Category:Satellites of Japan]]



{{communications-satellite-stub}}
{{communications-satellite-stub}}

Latest revision as of 23:24, 25 January 2023

JCSAT-4A
NamesJCSAT-6 (order to Feb 1999)
JCSAT-4A (Feb 1999 onward)
Mission typeCommunications
OperatorSKY Perfect JSAT Group
COSPAR ID1999-006A Edit this at Wikidata
SATCAT no.25630
Mission duration14.5 years (planned)
25 years, 3 months and 2 days (elasped)
Spacecraft properties
SpacecraftJCSAT-6
Spacecraft typeJCSAT
BusHS-601
ManufacturerHughes
Launch mass2,900 kilograms (6,400 lb)
Start of mission
Launch date16 February 1999, 01:45:26 UTC
RocketAtlas IIAS (AC-152)
Launch siteCape Canaveral, LC-36A
ContractorInternational Launch Services (ILS)
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude124° East
Transponders
Band32 Ku band
Coverage areaJapan
 

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]

  1. ^ "JCSAT-4A". Sky Perfect JSAT. Archived from the original on 13 July 2009. Retrieved 8 August 2009.
  2. ^ "UCS Satellite Database". Union of Concerned Scientists. 1 July 2009. Retrieved 8 August 2009.
  3. ^ Krebs, Gunter. "JCSat 5, 6". Gunter's Space Page. Retrieved 8 August 2009.
  4. ^ McDowell, Jonathan (14 March 2021). "Launch Log". Jonathan's Space Report. Retrieved 20 March 2021.
  5. ^ Wade, Mark. "JCSAT". Encyclopedia Astronautica. Archived from the original on 29 August 2002. Retrieved 8 August 2009.
  6. ^ McDowell, Jonathan. "Index". Geostationary Orbit Catalog. Jonathan's Space Report. Archived from the original on 6 April 2010. Retrieved 8 August 2009.


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