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{{Infobox planet |discovery=yes |physical_characteristics = yes |bgcolour=#FFFFC0 |
name=15 Eunomia
|named_after=[[Eunomia]]
|image = 15Eunomia (Lightcurve Inversion).png
|image=
|symbol= [[ImageBerkas:15 Eunomia symbol (bold).svg|15px24px]]
|discoverer=[[Annibale de Gasparis]]
|discovered=[[29 Juli]] [[1851]]
|alt_names=
|mp_category=[[Sabuk utama]] (Keluarga Eunomia)
|orbit_ref=<ref name=jpldata>{{cite web
|date=2008-05-08
|title=JPL Small-Body Database Browser: 15 Eunomia
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=15
|accessdate=2008-12-04}}</ref>
|epoch=14 Juni 2006 ([[Hari Julian]] 2453900,5)
|semimajor=395,429 Gm (2,643 SA)
|perihelion=321,429 Gm (2,149 SA)
|aphelion=469,429 [[Giga-|GGm]]m (3,138 [[Astronomical unit|SA]])
|eccentricity=0,187
|period=1569,687 [[hari|hr]] (4,30 [[Tahun Julian|a]])
|inclination=11,738[[derajat (satuan sudut)|°]]
|asc_node=293,273°
|arg_peri=97,909°
|mean_anomaly=286,102°
|avg_speed=18,16 km/[[detik|dtk]]
|dimensions=357×255×212 km<ref name=Baer/><br>268 km ([[Rata-rata geometrik|rata-rata]])<br>330×245×205<ref name="Baer2007">{{cite journal |last=Baer |first=James |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 |format=[[PDF]] |doi=10.1007/s10569-007-9103-8 |accessdate=2008-11-11 |year=2008 |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|url-status=dead}}</ref><ref name="Nathues05">[[Andreas Nathues|Nathues, A.]]; et al.; (2005); [http://www.rni.helsinki.fi/~mjk/Eunomia.pdf ''Spectral study of the Eunomia asteroid family - I. Eunomia''], Icarus, Vol. 175, p. 452</ref><ref name="Tanga03">[[Paolo Tanga|Tanga, P.]]; et al.; (2003); [http://www.edpsciences.org/articles/aa/pdf/2003/14/aa3023.pdf?access=ok ''Asteroid observations with the Hubble Space Telescope'']; Astronomy & Astrophysics, Vol. 401, p. 733</ref><br/>
255,3 ± 15&nbsp;km ([[IRAS]])<ref name=jpldata/>
|mass=3,12 {{e|19}} kg<ref name=Baer>{{cite web
|year=2008▼
{{cite web
|title=Recent Asteroid Mass Determinations▼
▲ |year=2008
|publisher=Personal Website▼
▲ |title=Recent Asteroid Mass Determinations
|author=Jim Baer▼
▲ |publisher=Personal Website
|url=http://home.earthlink.net/~jimbaer1/astmass.txt▼
▲ |author=Jim Baer
|accessdate=2008-12-04▼
▲ |url=http://home.earthlink.net/~jimbaer1/astmass.txt
|archive-date=2013-10-21
▲ |accessdate=2008-12-04
|archive-url=https://web.archive.org/web/20131021074442/http://home.earthlink.net/~jimbaer1/astmass.txt
|url-status=dead
}}</ref>
|density=3,09 ± 0,52 g/cm³<ref name=Baer/><br>3,8±0,7 g/cm³<ref name="VitaglianoStoss06">{{cite journal
|last=Vitagliano |first=Aldo
|coauthors=Reiner M. Stoss
|title=New mass determination of (15) Eunomia based on a very close encounter with (50278) 2000CZ12
|journal=Astronomy and Astrophysics
|volume=455 |issue=3 |pages=L29–L31 |year=2006
|doi=10.1051/0004-6361:20065760
|bibcode=2006A&A...455L..29V }}</ref> ([[IRAS]])
|surface_grav=0,08 m/s²
|escape_velocity=0,16 km/s
|rotation=0,2535 hr (6,083 [[jam]])<ref name=jpldata/><ref>[http://www.psi.edu/pds/archive/lc.html Planetary Data System (PDS) lightcurve data]</ref>
|spectral_type=[[Asteroid tipe S]]<ref name=jpldata/>
|magnitude = 7,9<ref name="Pasachoff1983">{{cite book |author=Donald H. Menzel and Jay M. Pasachoff |year=1983 |title=A Field Guide to the Stars and Planets |url=https://archive.org/details/fieldguidetostar00menz_0|edition=2nd |publisher=Houghton Mifflin |pages=[https://archive.org/details/fieldguidetostar00menz_0/page/391 391]|location=Boston, MA |isbn=0-395-34835-8 }}</ref> hingga 11,24
|abs_magnitude=5,28<ref name=jpldata/>
|albedo=0,209&nbsp;([[albedo geometrik|geometrik]])<ref name=jpldata/>
|angular_size = 0,29" <!-- Horizons 2028-Oct-22 --> hingga 0,085"
|single_temperature=~166 [[kelvin|K]]<br/>''maks:'' 260 K (-13 &nbsp;°C)
}}
'''15 Eunomia''' ({{IPAc-en|icon|j|ʊ|ˈ|n|oʊ|m|i|ə}} {{Respell|ew|NOH|mee-ə}}; {{Lang-el|''Ευνομία''}}) adalah sebuah [[asteroid]] yang sangat besar di bagian dalam [[sabuk asteroid]]. Eunomia adalah asteroid berbatu tipe S yang paling besar, dan merupakan asteroid sabuk utama terbesar kedelapan hingga kedua-belas ([[diameter]]nya yang tidak sama menyebabkan keraguan pemberian peringkat ini).▼
 
▲'''15 Eunomia''' ({{IPAc-en|icon|j|ʊ|ˈ|n|oʊ|m|i|ə}} {{Respell|ew|NOH|mee-ə}}; {{Lang-el|''Ευνομία''}}) adalah sebuah [[asteroid]] yang sangat besar di bagian dalam [[sabuk asteroid]]. Eunomia adalah asteroid berbatu tipe S yang paling besar, dan merupakan asteroid sabuk utama terbesar kedelapan hingga kedua-belas ([[diameter]]nya yang tidak sama menyebabkan keraguan pemberian peringkat ini).
Eunomia merupakan asteroid keluarga Eunomia yang paling besar, dan diperkirakan menyumbangkan 1% untuk total [[massa]] dari sabuk asteroid.<ref name="VitaglianoStoss06"/><ref name="Pitjeva05">{{cite journal |last=Pitjeva |first=E. V. |authorlink=Elena V. Pitjeva |title=High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants |journal=Solar System Research |year=2005 |volume=39 |issue=3 |pages=176 |url=http://iau-comm4.jpl.nasa.gov/EPM2004.pdf |format=[[PDF]] |doi=10.1007/s11208-005-0033-2|bibcode = 2005SoSyR..39..176P | accessdate= 18 November 2008 <!--Added by DASHBot-->| archiveurl= http://web.archive.org/web/20081031065523/http://iau-comm4.jpl.nasa.gov/EPM2004.pdf| archivedate= 31 October 2008 <!--Added by DASHBot-->}}: Eunomia 0.164E-11 solar masses; asteroid belt 15E-11 solar masses → 1.1%.</ref> Sebagai asteroid tipe S yang paling besar (keduanya adalah [[3 Juno]]), Eunomia telah cukup banyak menarik perhatian dunia [[sains]].▼
 
▲Eunomia merupakan asteroid keluarga Eunomia yang paling besar, dan diperkirakan menyumbangkan 1% untuk total [[massa]] dari sabuk asteroid.<ref name="VitaglianoStoss06"/><ref name="Pitjeva05">{{cite journal |last=Pitjeva |first=E. V. |authorlink=Elena V. Pitjeva |title=High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants |journal=Solar System Research |year=2005 |volume=39 |issue=3 |pages=176 |url=http://iau-comm4.jpl.nasa.gov/EPM2004.pdf |format=[[PDF]] |doi=10.1007/s11208-005-0033-2 |bibcode = 2005SoSyR..39..176P | accessdate= 18 November 2008 <!--Added by DASHBot--> | archiveurl= httphttps://web.archive.org/web/20081031065523/http://iau-comm4.jpl.nasa.gov/EPM2004.pdf| |archivedate= 31 October 2008 <!-10-Added31 by|dead-url=no DASHBot-->}}: Eunomia 0.164E-11 solar masses; asteroid belt 15E-11 solar masses → 1.1%.</ref> Sebagai asteroid tipe S yang paling besar (keduanya adalah [[3 Juno]]), Eunomia telah cukup banyak menarik perhatian dunia [[sains]].
 
Eunomia ditemukan oleh [[Annibale de Gasparis]] pada [[29 Juli]] [[1851]] dan dinamai menurut [[Eunomia]], salah satu [[Horai]], personifikasi perintah dan [[hukum]] dalam [[mitologi Yunani]].
 
Eunomia telah ditemukan pernah menutupi [[bintang]] lain sebanyak tiga kali. Eunomia mempunyai [[magnitudo semu|magnitudo]] rata-rata pada masa oposisi sebesar +8,5<ref>[{{Cite web |url=http://jas.org.jo/ast.html |title=The Brightest Asteroids] |access-date=2012-03-20 |archive-date=2008-05-11 |archive-url=https://web.archive.org/web/20080511115437/http://www.jas.org.jo/ast.html |url-status=dead }}</ref> hampir setara dengan kecerahan [[rata-rata]] dari [[Titan (bulan)|Titan]], dan dapat mencapai +7,9 pada masa oposisi dekat [[perihelion]].
 
Eunomia juga menjadi unsur dari salah [[permainan video]] "''Descent''" di mana ada satu level tersembunyi untuk menyelidiki stasiun [[tambang]] rahasia di asteroid Eunomia.
Baris 68 ⟶ 72:
* [http://www.rni.helsinki.fi/~mjk/Eunomia.pdf Shape model deduced from lightcurve, including composition variations across the surface]
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=15;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=15 Ephemeris]
* {{cite web |title=Elements and Ephemeris for (15) Eunomia |publisher=Minor Planet Center |url=http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=b2011&o=00015 | accessdate= 26 May 2011 <!--Added by DASHBot--> |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303231732/http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=b2011&o=00015 |url-status=dead }} (displays [[Elongation (astronomy)|Elong]] from Sun and [[magnitudo semu|V mag]] for 2011)
 
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