| 词条 | Himawari 8 |
| 释义 |
| name = Himawari 8 | image = | image_caption = | mission_type = Weather satellite | operator = JMA | website = | COSPAR_ID = 2014-060A | SATCAT = 40267 | mission_duration = 8 years (planned) | spacecraft_type = | spacecraft_bus = DS-2000 | manufacturer = Mitsubishi Electric | dry_mass = 1300 kg | launch_mass = 3500 kg | power = 2.6 kilowatts from solar array | launch_date = {{start-date|7 October 2014, 05:16|timezone=yes}} UTC | launch_rocket = H-IIA 202 | launch_site = Tanegashima LA-Y1 | launch_contractor = Mitsubishi Heavy Industries | entered_service = 7 July 2015, 02:00 UTC[1] | disposal_type = | deactivated = | orbit_epoch = 22 January 2015, 22:13:28 UTC[2] | orbit_reference = Geocentric | orbit_regime = Geostationary | orbit_periapsis = {{convert|35791|km|abbr=on}}[2] | orbit_apoapsis = {{convert|35795|km|abbr=on}}[2] | orbit_inclination = 0.03 degrees[2] | orbit_period = 1436.13 minutes[2] | orbit_longitude = 140.7° East | orbit_slot = | apsis = gee }}{{nihongo|Himawari 8|ひまわり8号}} is a Japanese weather satellite, the 8th of the Himawari geostationary weather satellites operated by the Japan Meteorological Agency. The spacecraft was constructed by Mitsubishi Electric with assistance from Boeing, and is the first of two similar satellites to be based on the DS-2000 satellite bus.[3] Himawari 8 entered operational service on 7 July 2015 and is the successor to MTSAT-2 (Himawari 7) which was launched in 2006. LaunchHimawari 8 was launched atop a H-IIA rocket flying from the Yoshinobu Launch Complex Pad 1 at the Tanegashima Space Center.[4] The launch occurred at 05:16 UTC on 7 October 2014 and reached its operational geostationary orbit in October 2014, at 140.7 degrees East.[5] Himawari 9, which is identical to Himawari 8, was launched on 2 November 2016 and placed in a stand-by orbit until 2022{{update after|2022|4|1}}, when it is planned to succeed Himawari 8. DesignThe DS2000 satellite bus has a lifespan of 15 years, however the expected operational lifespan of Himawari 8 is expected to be limited by its instruments which are only designed for 8 years of service. At launch, the mass of the satellite was about {{convert|3500|kg}}. Power is supplied by a single gallium arsenide solar panel, which provides up to 2.6 kilowatts of power.[10] InstrumentsThe primary instrument aboard Himawari 8, the Advanced Himawari Imager (AHI), is a 16 channel multispectral imager to capture visible light and infrared images of the Asia-Pacific region.[6] The instrument was designed and built by Exelis Geospatial Systems (now Harris Space & Intelligence Systems) and has similar spectral and spatial characteristics to the Advanced Baseline Imager (ABI) used in the American GOES-16, -17, -T, and -U satellites. The AHI can produce images with a resolution down to 500m and can provide full disk observations every 10 mins and images of Japan every 2.5 minutes.[6] The Australian Bureau of Meteorology CEO Dr Rob Vertessy stated that Himawari 8 "generates about 50 times more data than the previous satellite".[13] Data recorded from the Japanese Himawari 8 will be made freely available for use by meteorological agencies in other countries.[7] GalleryReferences1. ^{{cite web|title=静止気象衛星「ひまわり８号」の運用開始日について|url=http://www.jma.go.jp/jma/press/1505/27a/20150527_himawari8_operation_schedule_press.html|publisher=Japan Meteorological Agency|accessdate=27 May 2015|language=Japanese}} 2. ^1 2 3 4 {{cite web|url=http://www.heavens-above.com/orbit.aspx?satid=40267|title=HIMAWARI 8 - Orbit|last=Peat|first=Chris|publisher=Heavens-Above|date=22 January 2015|accessdate=25 January 2015}} 3. ^{{cite web|url=http://www.nasaspaceflight.com/2014/10/japan-loft-himawari-8-satellite-h-iia/|title=Japan lofts Himawari 8 weather satellite via H-IIA rocket|last=Graham|first=William|publisher=NASASpaceflight.com|accessdate=7 October 2014}} 4. ^{{cite web|url=http://www.spaceflightnow.com/h2a/f25/141007launch/|title=H-2A rocket boosts Japanese weather satellite into orbit|last=Clark|first=Stephen|publisher=Spaceflight Now|accessdate=7 October 2014}} 5. ^{{cite web|url=http://www.data.jma.go.jp/mscweb/en/himawari89/index.html|title=JMA/MSC: Himawari-8/9|publisher=Japan Meteorological Agency|accessdate=7 October 2014}} 6. ^1 2 {{cite web|url=http://www.jma.go.jp/jma/jma-eng/satellite/news/himawari89/himawari89_leaflet.pdf|title=New geostationary meteorological satellites — Himawari-8/9 — |publisher=Japan Meteorological Agency|accessdate=7 October 2014}} 7. ^1 {{cite web |url=http://media.bom.gov.au/releases/207/spectacular-new-era-in-satellite-meteorology-unveiled/ |title=Spectacular new era in satellite meteorology unveiled |date=30 September 2015 |website=Australian Bureau of Meteorology |publisher=Commonwealth of Australia |access-date=30 September 2015}} External links{{Portal|Spaceflight}}
7 : Weather satellites|Japan Meteorological Agency|Satellites using the DS2000 bus|Spacecraft launched in 2014|Satellites of Japan|2014 in Japan|Spacecraft launched by H-II rockets |
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