20 Massalia: Perbedaan antara revisi

{{Infobox Planet |discovery=yes |physical_characteristics = yes |bgcolour=#FFFFC0 |

|discoverer=[[Annibale de Gasparis]]

|discovered=[[19 September]] [[1852]]

|alt_names=

|named_after = [[Marseille]]

|mp_category=[[Sabuk utama]] (Keluarga Massalia)

|epoch=22 Oktober 2004 ([[Hari Julian]] 2453300,5)

|semimajor=360,305 Gm (2,408 SA)

|perihelion=308,699 Gm (2,064 SA)

|aphelion=411,911 [[Giga-|G]]m (2,753 [[Astronomical unit|SA]])

|eccentricity=0,143

|period=1365,261 [[hari|hr]] (3,74 [[Tahun Julian|a]])

|inclination=0,707[[derajat (satuan sudut)|°]]

|asc_node=206,530°

|arg_peri=255,578°

|mean_anomaly=161,641°

|avg_speed=19,09 km/[[detik|dtk]]

|dimensions=160×145×132 km<ref name=Baer>{{cite web

|year=2008

|title=Recent Asteroid Mass Determinations

|publisher=Personal Website

|author=Jim Baer

|url=http://home.earthlink.net/~jimbaer1/astmass.txt

|accessdate=2008-12-11}}</ref><br>145 km ([[Rata-rata geometrik|rata-rata]])<br>160×145×130 km <ref name="IRAS">[http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab Supplemental IRAS Minor Planet Survey]</ref><ref name="Kaasalainen02">{{cite journal |author= M. Kaasalainen et al.|title= Models of Twenty Asteroids from Photometric Data|journal= Icarus|year= 2002|volume= 159|pages= 369|url= http://www.rni.helsinki.fi/~mjk/IcarPIII.pdf |format=PDF|doi= 10.1006/icar.2002.6907|bibcode=2002Icar..159..369K |issue= 2}}</ref>

|mass=5,67{{e|18}} kg<ref name=Baer/><br>5,2{{e|18}} kg<ref name="Bange98">{{cite journal |author= J. Bange|title= An estimation of the mass of asteroid 20-Massalia derived from the HIPPARCOS minor planets data|journal= Astronomy & Astrophysics|year= 1998|volume= 340|pages= L1|url= http://articles.adsabs.harvard.edu//full/seri/A%2BA../0340//L000001.000.html|bibcode = 1998A&A...340L...1B }}</ref>

|density=3,54±0,85 g/cm³<ref name=Baer/>

|surface_grav=0,054 m/s²

|escape_velocity=0,093 km/s

|rotation=0,3374 hr (8,098 [[jam]]) <ref name="PDS lc">[http://www.psi.edu/pds/archive/lc.html PDS lightcurve data]</ref>

|spectral_type=[[Asteroid tipe S]] <ref name="PDS lc_2">[http://www.psi.edu//pds/resource/taxonomy.html PDS spectral class data]</ref>

|magnitude= 8,3<ref name="Pasachoff1983">{{cite book |author=Donald H. Menzel and Jay M. Pasachoff |year=1983 |title=A Field Guide hingga the Stars and Planets |edition=2nd |publisher=Houghton Mifflin |pages=391 |location=Boston, MA |isbn=0-395-34835-8 }}</ref> hingga 12,0

|abs_magnitude=6,50

|albedo=0,210&nbsp;([[Albedo geometrik|geometrik]])<ref name="IRAS"/>

|angular_size = 0,186" <!-- Horizons 2017-Dec-06 --> hingga 0,058"

|single_temperature=~174 [[kelvin|K]]<br>''maks:'' 265 K (-8°C)}}