4 Vesta: Perbedaan antara revisi

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{{Infobox Planet |discovery=yes |physical_characteristics = yes |bgcolour=#99cccc
|name=4 Vesta
|symbol=[[Berkas:Vesta symbol (bold).svg|25px24px|Modern astrological symbol of Vesta]]
|image=[[Berkas:Vesta from Dawn, July 17.jpg|250pxframeless|center]]
|caption = Kawah Rheasilvia yang mencakup sebagian besar belahan selatan dari Vesta. Gambar diambil dengan pesawat ruang angkasa Dawn
|discoverer=[[Heinrich Wilhelm Olbers]]
Baris 8:
|pronounce = {{IPA-en|ˈvɛstə|}}, {{lang-la|Vesta}}
|mp_category=[[Sabuk utama]] (Keluarga Vesta)
|orbit_ref = <ref name="jpldata">{{cite web
|title=JPL Small-Body Database Browser: 4 Vesta
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=4
|accessdate=2008-06-01}}</ref>
|epoch=[[14 Mei]] [[2008]] ([[Hari Julian]] 2454600.5)
|aphelion=384,72 Gm (2,572 [[Satuan astronomi|SA]])
Baris 19:
|period=3,63 [[tahun Julian (astronomi)|a]] (1325,15 [[Hari|hr]])
|inclination=7,135[[derajat (satuan sudut)|°]] ke [[Ekliptika]]<br />5,56° ke [[bidang invariabel]]<ref name=meanplane>{{cite web
|date=2009-04-03
|title=The MeanPlane (Invariable plane) of the Solar System passing through the barycenter
|url=http://home.comcast.net/~kpheider/MeanPlane.gif
|accessdate=2009-04-10
|accessdate=2009-04-10|archiveurl=http://web.archive.org/web/20090420194536/http://home.comcast.net/~kpheider/MeanPlane.gif|archivedate=2009-04-20}} (produced with [http://chemistry.unina.it/~alvitagl/solex/ Solex 10] written by Aldo Vitagliano; see also [[Invariable plane]])</ref>
|archiveurl=https://web.archive.org/web/20090420194536/http://home.comcast.net/~kpheider/MeanPlane.gif
|archivedate=2009-04-20
|dead-url=no
}} (produced with [http://chemistry.unina.it/~alvitagl/solex/ Solex 10] {{Webarchive|url=https://web.archive.org/web/20081220235836/http://chemistry.unina.it/~alvitagl/solex/ |date=2008-12-20 }} written by Aldo Vitagliano; see also [[Invariable plane]])</ref>
|asc_node=103,91°
|arg_peri=149,83°
|mean_anomaly=90,53°
|avg_speed=19,34 km/[[detik|dtk]]
|p_orbit_ref = <ref name=Vesta-POE>{{cite web
|title=AstDyS-2 Vesta Synthetic Proper Orbital Elements
|publisher=Department of Mathematics, University of Pisa, Italy
|url=http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.6&n=4
|accessdate=2011-10-01}}</ref>
|p_semimajor = 2,3615126
|p_eccentricity = 0,0987580
Baris 39 ⟶ 43:
|node_rate = −39,597863
|dimensions= 578×560×458 km<ref name="Thomas1997">{{cite journal
|author=Thomas, P. C.
|title=Impact excavation on asteroid 4 Vesta: Hubble Space Telescope results
|journal=Science
|volume=277
|pages=1492
|year=1997
|doi=10.1126/science.277.5331.1492}}</ref><br />529 km ([[Rataan geometri|rata-rata]])
|mass=<span style="white-space:nowrap;">(2,67 ± 0,02){{e|20}} [[kilogram|kg]]</span><!-- (1.34±0.01)E-10 solar masses --><ref name="Baer2007">{{cite journal
|last=Baer
|first=James
|coauthors=Chesley, Steven R.
|title=Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris
|journal=Celestial Mechanics and Dynamical Astronomy
|volume=100
|issue=2008
|pages=27–42
|publisher=Springer Science+Business Media B.V. 2007
|url=http://www.springerlink.com/content/h747307j43863228/fulltext.pdf
|format=[[PDF]]
|doi=10.1007/s10569-007-9103-8
|accessdate=2008-11-11
|year=2008}}</ref>
|archive-date=2011-02-24
|archive-url=https://web.archive.org/web/20110224014158/http://www.springerlink.com/content/h747307j43863228/fulltext.pdf
|url-status=dead
}}</ref>
|density=3,42 g/[[sentimeter kubik|cm³]]<ref name="Baer2007" />
|surface_grav=0,22 m/det²
|escape_velocity=0,35 km/det
|rotation=0,222&nbsp;6 hr (5.342 jam)<ref name="jpldata" /><ref name="lc">{{cite web
|last=Harris |first=A. W.
|coauthors=Warner, B. D.; Pravec, P.; (Eds.)
|title=Asteroid Lightcurve Derived Data. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V8.0.
|publisher=[[Planetary Data System|NASA Planetary Data System]]
|date=2006
|url=http://www.psi.edu/pds/resource/lc.html
|accessdate=2007-03-15}}</ref>
|spectral_type=[[Asteroid tipe V]]<ref name="jpldata" /><ref name="tax">{{cite web
|last=Neese |first=C.
|coauthors=Ed.
|title=Asteroid Taxonomy EAR-A-5-DDR-TAXONOMY-V5.0
|publisher=[[Planetary Data System|NASA Planetary Data System]]
|date=2005
|url=http://www.psi.edu/pds/resource/taxonomy.html
|accessdate= 2007-03-15}}</ref>
|magnitude = 5,1<ref name="Pasachoff1983">{{cite book
|author=Menzel, Donald H.; and Pasachoff, Jay M.
|year=1983
|title=A Field Guide to the Stars and Planets
|edition=2nd
|publisher=Houghton Mifflin
|pages=391
|location=Boston, MA
|isbn=0395348358 }}</ref> hingga 8,48
|abs_magnitude=3,20<ref name="jpldata" /><ref name="iras">{{cite web
|last=Tedesco |first=E. F.
|coauthors=Noah, P. V.; Noah, M.; Price, S. D.
|title=Infra-Red Astronomy Satellite (IRAS) Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0.
|publisher=[[Planetary Data System|NASA Planetary Data System]]
|date=2004
|url= http://www.psi.edu/pds/resource/imps.html
|accessdate=2007-03-15 }}</ref>
|albedo=0,423&nbsp;([[albedo geometrik|geometrik]])<ref name="iras" />
|angular_size = 0,64"<!-- Horizons 2007-Jun-01 --> hingga 0,20"
|single_temperature=''min:'' 85 [[Kelvin|K]] (−188 [[Celsius|°C]])<br />''maks:'' 255 K (−18&nbsp;°C)<ref name="Mueller01">{{cite journal
|url=http://www.esa.int/esapub/bulletin/bullet108/chapter4_bul108.pdf
|author=Mueller, T. G.
|coauthors=Metcalfe, L.
|title=ISO and Asteroids
|journal=European Space Agency (ESA) bulletin
|volume=108
|pages=38
|year=2001}}</ref>
}}
'''4 Vesta''' adalah objek terbesar kedua di [[sabuk asteroid]], dengan diameter sebesar 530 [[kilometer]] (sekitar 330 [[mil]])<ref name="jpldata" /> dan diperkirakan memiliki massa 9% dari massa seluruh sabuk asteroid.<!-- 1.344±0.001 ÷ 15±2 (E-10 solar masses) --><ref name="Pitjeva05">{{cite journal
|last=Pitjeva
|first=E. V.
Baris 118 ⟶ 129:
|url=http://iau-comm4.jpl.nasa.gov/EPM2004.pdf
|format=[[PDF]]
|doi=10.1007/s11208-005-0033-2
|access-date=2009-10-27
|archive-date=2012-09-07
|archive-url=https://web.archive.org/web/20120907164956/http://iau-comm4.jpl.nasa.gov/EPM2004.pdf
|url-status=dead
}}</ref> Ia ditemukan oleh [[astronom]] [[Jerman]] [[Heinrich Wilhelm Olbers]] pada tanggal [[29 Maret]] [[1807]].<ref name="jpldata" /> Nama [[Vesta (mitologi)|Vesta]] diambil dari nama [[dewi]] [[perawan]] dalam [[mitologi Romawi]], yang merupakan dewi pelindung untuk rumah dan perapian.
 
Vesta kehilangan sekitar 1% dari massanya dalam sebuah tabrakan yang terjadi kurang dari satu miliar tahun lalu. Banyak serpihan-serpihan dari kejadian ini yang jatuh ke bumi sebagai [[meteorit HED]], suatu sumber bukti yang melimpah mengenai asteroid.<ref name="Kelley2003">{{cite journal
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|url=http://www.orbitsimulator.com/gravity/articles/ceres.html
|accessdate=2008-05-31}}</ref>
 
Wahana antariksa [[Dawn (pesawat luar angkasa)|Dawn]] milik [[Badan Penerbangan dan Antariksa Amerika Serikat|NASA]] memasuki orbit Vesta pada tanggal 16 Juli 2011 untuk eksplorasi selama satu tahun dan meninggalkan orbit pada tanggal 5 September 2012 dalam perjalanan ke tujuan akhirnya, planet kerdil Ceres. Para peneliti terus memeriksa data yang dikumpulkan oleh Dawn untuk wawasan tambahan tentang pembentukan dan sejarah Vesta.
 
== Referensi ==
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{{Minor planets navigator|[[3 Juno]]||[[5 Astraea]]}}
{{Portal|astronomi}}
 
{{Commonscat|Vesta (asteroid)}}
 
{{DEFAULTSORT:Vesta}}
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