19 Fortuna: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
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Baris 29:
| avg_speed=18,94 km/[[detik|dtk]]
| dimensions=225 × 205 × 195 km<ref name=Baer/><br>225 km<ref name=Hubble1998>{{cite journal
|last=Storrs
|first=Alex |coauthors=Weiss, B.; Zellner, B.; et al.
|title=Imaging Observations of Asteroids with Hubble Space Telescope
|journal=Icarus
|volume=137
|pages=260–268 |year=1998 |url=http://scripts.mit.edu/~paleomag/articles/Storrs_1999_Icarus.pdf
|accessdate=2005-01-15
|doi=10.1006/icar.1999.6047
|bibcode=1999Icar..137..260S |issue=2
|archive-date=2012-02-25
|archive-url=https://web.archive.org/web/20120225134811/http://scripts.mit.edu/~paleomag/articles/Storrs_1999_Icarus.pdf
|dead-url=yes
}}</ref><ref name="Baer2007"/>
| mass=1,27{{e|19}} kg<ref name=Baer>{{cite web
|year=2008
Baris 44 ⟶ 52:
|author=Jim Baer
|url=http://home.earthlink.net/~jimbaer1/astmass.txt
|accessdate=2008-11-27
|archive-date=2013-10-21
|archive-url=https://web.archive.org/web/20131021074442/http://home.earthlink.net/~jimbaer1/astmass.txt
|dead-url=yes
}}</ref>
| density=2,70±0,48 g/cm³<ref name=Baer/>
| surface_grav=~0,0629 m/s²
Baris 58 ⟶ 70:
Fortuna berdiameter 225 km dan memiliki [[albedo geometrik]] paling gelap untuk asteroid dengan [[diameter]] lebih dari 150 km yang pernah diketahui. Albedo Fortuna telah diukur bernilai 0,028 dan 0,037.<ref name=Hubble2005>{{cite journal
|last=Storrs
|first=Alex |coauthors=Dunne; Conan; Mugnier; et al.
|title=A closer look at main belt asteroids 1: WF/PC images
|journal=Icarus
|volume=173
|issue=2 |pages=409–416 |year=2005 |doi=10.1016/j.icarus.2004.08.007
|url=http://web.mit.edu/bpweiss/www/StorrsWeiss2005AsteroidsHSTIcarus.pdf
|accessdate=2007-09-23
|archiveurl
|archivedate |bibcode=2005Icar..173..409S |dead-url=no
}}</ref>
[[Teleskop luar angkasa Hubble]] telah mengamati Fortuna pada tahun 1993. Dari pengamatan itu diketahui diameter tampak dari Fortuna adalah 0,20 [[menit busur|detik busur]] (4,5 [[piksel]] dalam Planetary Camera) dan bentuknya menyerupai bola. [[satelit alami|Satelit]] juga berusaha untuk dicari namun tidak terdeteksi.
Baris 79 ⟶ 99:
Fortuna pernah diperturbasi oleh asteroid 80 km, [[135 Hertha]], dan awalnya diperkirakan memiliki massa 1,08{{e|19}} kg oleh Baer pada perturbasi ini.<ref name="Baer2007">{{cite journal
|last=Baer
|first=James |authorlink=James Baer |coauthors=[[Steven R. Chesley]]
|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
Baris 89 ⟶ 113:
|doi=10.1007/s10569-007-9103-8
|accessdate=2008-11-11
|year=2008
|year=2008 |bibcode = 2008CeMDA.100...27B }}</ref> Perkiraan terkini menunjukan bahwa massa Fortuna adalah 1,27{{e|19}} kg.<ref name=Baer/>▼
|bibcode=2008CeMDA.100...27B
|archive-date=2011-02-24
|archive-url=https://web.archive.org/web/20110224014158/http://www.springerlink.com/content/h747307j43863228/fulltext.pdf
|dead-url=yes
▲
Pada [[21 Desember]] [[2012]] Fortuna (~200 km) akan berpapasan dengan asteroid 6,5Gm [[687 Tinette]].<ref>Generated with [http://chemistry.unina.it/~alvitagl/solex/ Solex 10] {{Webarchive|url=https://www.webcitation.org/5gOzK38bc?url=http://chemistry.unina.it/~alvitagl/solex/ |date=2009-04-29 }} by Aldo Vitagliano</ref>
== Referensi ==
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