Akatsuki (wahana antariksa): Perbedaan antara revisi

{{DISPLAYTITLE:''Akatsuki'' (pesawatwahana luar angkasaantariksa)}}

|mission_duration = ~2 tahun (perhitungan ilmiah)<br />{{Age in years, months and days|year=2010 |month=05 |day=20}}

|launch_mass = {{convert|517.6|kg|abbr=on}}<ref name=Takeshi2011>{{cite journal|last=Takeshi|first=Oshima|last2=Tokuhito|first2=Sasaki |title=Development of the Venus Climate Orbiter PLANET-C (AKATSUKI) |journal=NEC Technical Journal|volume=6|issue=1|pages=47–51|url=http://www.nec.co.jp/techrep/en/journal/g11/n01/110110.html}}</ref>

|launch_date = 20 Mei 2010, 21:58:22 UTC<ref name=spaceflightnow>{{cite news |author=Stephen Clark |title=H-2A Launch Report – Mission Status Center |url=http://www.spaceflightnow.com/h2a/akatsuki/status.html |work=Spaceflight Now |date=20 Mei 2010|accessdate=20 Mei 2010|archiveurl= https://web.archive.org/web/20100520013452/http://spaceflightnow.com/h2a/akatsuki/status.html|archivedate= 20 Mei 2010 |deadurl= no}}</ref>

|orbit_period = 15 hari; disesuaikan kembali menjadi 9 hari pada Maret 2016<ref name="insertion TJT">{{cite news |url=http://www.japantimes.co.jp/news/2015/12/07/national/science-health/jaxa-plans-fire-probes-thrusters-second-attempt-venus-orbit/ |title=Japanese probe fires thrusters in second bid to enter Venus orbit |work=The Japan Times |date=7 Desember 2015 |accessdate=7 Desember 2015 }}</ref>

|type = flyby

|note = gagal

|object = [[Venus]]

|arrival_date = 6 Desember 2010, 23:49:00&nbsp;UTC

|distance = <!--closest approach-->

|type = orbiter

|object = [[Venus]]

|arrival_date = 7 Desember 2015<ref name="Akatsuki-Successful-Orbit-Gizmag">{{cite news|last1=Szondy|first1=David|title=Akatsuki probe enters orbit around Venus|url=http://www.gizmag.com/jaxa-venus-akatsuki-orbit/40770/|accessdate=7 Desember 2015}}</ref><ref name="Akatsuki-Sucessful-Orbit-SpaceFlightNow">{{cite news|last1=Clark|first1=Stephan|title=Japanese probe fires rockets to steer into orbit at Venus|url=https://spaceflightnow.com/2015/12/06/japanese-space-probe-to-steer-into-orbit-around-venus/|accessdate=7 Desember 2015}}</ref>

|orbits =

{{nihongo|'''''Akatsuki'''''|あかつき, 暁|| "Fajar"}}, juga disebut sebagai '''''Venus Climate Orbiter''''' ('''''VCO''''') dan '''''Planet-C''''', adalah [[space probe|pesawat misi ruang angkasa]] Jepang ([[JAXA]]) yang ditugaskan untuk mempelajari [[atmosfer Venus]]. Pesawat tersebut diluncurkan bersama dengan [[H-IIA|roket H-IIA 202]] pada 20 Mei 2010,<ref>{{cite web |author=Chris Bergin |title=AXA H-IIA carrying Akatsuki and IKAROS launches at second attempt |url=http://www.nasaspaceflight.com/2010/05/axa-launch-h-iia-carrying-akatsuki-ikaros/ |work=NASASpaceFlight |date=20 Mei 2010 |accessdate=19 November 2010}}</ref> dan gagal untuk memasuki orbit Venus pada 6 Desember 2010. Setelah pesawat ini [[Orbit heliosentris|mengitari matahari]] selama lima tahun, para peneliti meletakkan pesawat ini pada orbit Venus lainnya pada 7 Desember 2015 dengan cara menyalakan pendorong [[kontrol attitude]] selama 20 menit.<ref name="Akatsuki-Successful-Orbit-Gizmag"/><ref name="Akatsuki-Sucessful-Orbit-SpaceFlightNow"/><ref>{{cite news |last1=Limaye |first1=Sanjay |title=Live from Sagamihara: Akatsuki Orbit Insertion – Second Try |url=http://www.planetary.org/blogs/guest-blogs/2015/12060740-live-from-sagamihara.html |accessdate=7 Desember 2015}}</ref><ref>{{cite web |url=http://www.popularmechanics.com/space/a17432/japan-venus-probe/ |title=Japan's Long Lost Venus Probe May Boom Back to Life |first=John |last=Wenz |work=[[Popular Mechanics]] |date=21 September 2015 |accessdate=14 Oktober 2015}}</ref> Dengan menggunakan lima kamera yang berbeda,'' Akatsuki'' akan mempelajari stratifikasi atmosfer, dinamika atmosfer, dan perhitungan fisika dari atmosfer di Venus.<ref name="Overview 2011">{{cite journal |title=Overview of Venus orbiter, Akatsuki |journal=Earth, Planets and Space |date=Mei 2011 |last1=Nakamura |first1=N. |displayauthors=etal |volume=63 |issue=5 |pages=443–457 |issn=1880-5981 |doi=10.5047/eps.2011.02.009 |accessdate=7 Desember 2015 }}</ref><ref name="Akatsuki Exploring the Venusian Atmosphere">{{cite web |title=Exploring the Venusian Atmosphere – AKATSUKI/PLANET-C |url=http://global.jaxa.jp/countdown/f17/special/movie_e.html |website=Akatsuki Special Site |accessdate=5 Desember 2015}}</ref>

== Pelaksanaan ==

[[ImageBerkas:H-IIA F17 launching AKATSUKI.jpg|thumbjmpl|uprigh|Peluncuran Akatsuki]]

Akatsuki diluncurkan pada 20 Mei 2010 jam 21:58:22 ([[Coordinated Universal Time|UTC]]) dari Tanegashima Space Center,<ref name=planet_c>{{cite web| url=http://www.jaxa.jp/projects/sat/planet_c/index_e.html| title=AKATSUKI orbit control at perihelion| publisher=JAXA| date=1 November 2011| accessdate=3 December 2011| archive-date=2012-04-11| archive-url=https://www.webcitation.org/66pe8RvRF?url=http://www.jaxa.jp/projects/sat/planet_c/index_e.html| dead-url=yes}}</ref><ref>{{cite news |title=Launch of Venus probe ''Akatsuki'' postponed due to bad weather |url=http://www.japantoday.com/category/technology/view/launch-of-venus-probe-akatsuki-postponed-due-to-bad-weather |work=Japan Today |date=18 May 2010 |accessdate=19 November 2010}}{{Pranala mati|date=Januari 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

Akatsuki direncanakan memasuki orbit pada 6 Desember 2010 23:49:00 [[UTC]]. Pembakaran bahan bakar berlangsung selama 12 menit untuk mencapai target. Namun setelah kehilangan kontak karena terhalang planet Venus, sesuatu yang telah direncanakan sebelumnya, pemulihan komunikasi dengan Akatsuki tidak berjalan sesuai rencana. Setelah itu, diketahui bahwa Akatsuki memasuki safe mode selama terhalang Venus. Butuh waktu untuk memulihkan kondisi Akatsuki. Pada 8 Desember, JAXA mengumumkan bahwa penyisipan orbit telah gagal.<ref name=planet_c_index>{{cite web|url=http://www.jaxa.jp/projects/sat/planet_c/topics_e.html|title=Venus Climate Orbiter "AKATSUKI" (PLANET_C): Topics|publisher=JAXA|date=1 November 2011|accessdate=3 December 2011|archive-date=2013-10-05|archive-url=https://web.archive.org/web/20131005015626/http://www.jaxa.jp/projects/sat/planet_c/topics_e.html|dead-url=yes}}</ref><ref name=jiji20101118>{{cite web |url=http://www.jiji.com/jc/zc?k=201011/2010111800706 |script-title=ja:来月７日に金星周回軌道へ＝あかつき、エンジン噴射−７年前は火星で失敗・宇宙機構 |language=Japanese |work=Jiji.com |publisher=[[Jiji Press]] |date=18 November 2010 |accessdate=5 December 2010 |archive-date=2012-04-11 |archive-url=https://www.webcitation.org/66pe54Qy4?url=http://www.jiji.com/jc/zc?k=201011%2F2010111800706 |dead-url=yes }}</ref><ref>{{cite web |url=http://www.jaxa.jp/countdown/f17/img/topics_20101207-3_j.pdf |script-title=ja:金星探査機「あかつき」の状況について |trans_title=About the State of Venus Probe Akatsuki |language=Japanese |date=7 December 2010 |accessdate=7 December 2010}}</ref><ref>JAXA's press briefing, 22:00, 7 December 2010 JST</ref><ref name="ABC">{{cite web | title=Japan's Venus Probe Fails to Enter Orbit | url=http://abcnews.go.com/Technology/wireStory?id=12339589 | publisher=[[ABC News]] | accessdate=8 December 2010}}</ref><ref name="planetary">{{cite web | title=Akatsuki Mission statement | url=http://planetary.org/about/press/releases/2010/1207_Akatsuki_Mission_Statement.html | publisher=[[The Planetary Society]] | accessdate=8 December 2010 | archive-date=2012-04-11 | archive-url=https://www.webcitation.org/66pe7Ap1r?url=http://planetary.org/about/press/releases/2010/1207_Akatsuki_Mission_Statement.html | dead-url=yes }}</ref>

* [http://www.jaxa.jp/projects/sat/planet_c/index_e.html JAXA ''Akatsuki'' Planet-C page]{{Webarchive|url=https://web.archive.org/web/20120513140027/http://www.jaxa.jp/projects/sat/planet_c/index_e.html |date=2012-05-13 }}

* [http://www.jaxa.jp/countdown/f17/index_e.html JAXA ''Akatsuki'' Special Site]

* [http://www.stp.isas.jaxa.jp/venus/top_english.html Planet-C page (Solar Terrestrial Physics Group)]

* [http://www.lpi.usra.edu/vexag/Nov2005/VCO_VEXAG2005.pdf Presentation about Planet-C from the VEXAG meeting in November 2005] (PDF, 2.7 MB)

* {{cite web|url=http://news.softpedia.com/news/JAXA-Gets-Ready-to-Launch-Venus-Probe-137518.shtml|title=JAXA Gets Ready to Launch Venus Probe|last=Vieru|first=Tudor|publisher=Softpedia|accessdate=30 March 2010| archiveurl= httphttps://web.archive.org/web/20100323010440/http://news.softpedia.com/news/JAXA-Gets-Ready-to-Launch-Venus-Probe-137518.shtml| archivedate= 23 March 2010 <!-03-DASHBot-->23| deadurl= no}}

* [http://www.jaxa.jp/countdown/f17/pdf/presskit_akatsuki_e.pdf Venus Climate Orbiter "AKATSUKI"] (PDF, 1.72 Mb)

* [http://twitter.com/Akatsuki_JAXA Twitter]

[[Kategori:SpaceProb probeantariksa]]

[[Kategori:SpaceProb probeantariksa yang diluncurkan tahun 2010]]