Pandora (lúa): Diferenzas entre revisións

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Liña 3:
 
{| class="infobox" style="width:250px; font-size:8pt;"
|+ style="font-size:10pt;" | '''PrometeoPandora'''
|-
| colspan="2" |[[Ficheiro:PrometheusPandora 12-26-09bPIA07632.jpg|250px|300px]]
|-
| colspan="2" |<small><center>Imaxe de PrometeoPandora tomada pola ''[[sonda Cassini–Huygens|Cassini]]'' (26 de decembro do 2009)</center></small>
|-
! bgcolor="#a0ffa0" colspan="2" align="center"| Descubrimento
Liña 25:
|-
! align="left" | [[Eixo semi-maior]]
| 139141.380720 ± 10 [[quilómetro|km]]
|-
! align="left" | [[Excentricidade (órbita)|Excentricidade]]
| 0,00220042
|-
! align="left" | [[Período orbital]]
| 0,612990038.628504213 días
|-
! align="left" | [[Inclinación]]
| 0,008050 ± 0,004° (respecto do ecuador de Saturno)
|-
! align="left" | [[satélite natural|Satélite]] de
Liña 42:
|-
! align="left" | Dimensións
| 119&times;87&times;61103 × 80 × 64 km <ref name="Porco2006">{{cita publicación periódica | autor= [[Carolyn C. Porco|Porco, C. C.]]; ''e o seu equipo.''| título= ''Physical Characteristics and Possible Accretionary Origins for Saturn's Small Satellites''| revista= Bulletin of the American Astronomical Society| ano= 2006| volume= 37| páxinas= 768| url=http://www.lpi.usra.edu/meetings/lpsc2006/pdf/2289.pdf}}</ref>
|-
! align="left" | [[Radio]] medio
| 4340,13 ± 2,02 km <ref name="Porco2006" />
|-
! align="left" | [[Área]] superficial
| ~2321.000 [[quilómetro cadrado|km<sup>2</sup>]]
|-
! align="left" | [[Volume]]
| ~340270.000 [[quilómetro cúbico|km<sup>3</sup>]]
|-
! align="left" | [[Masa]]
| 1,566356 ± 0,019022 x 10<sup>17</sup> [[quilogramo|kg]] <ref name="Spitale2006"/>
|-
! align="left" | [[Densidade]] media
| 0,4749 ± 0,0708 g/cm³
|-
! align="left" | [[Gravidade]] superficial
| ~0,0030034 [[Aceleración|m/s<sup>2</sup>²]]
|-
! align="left" | [[Velocidade de escape]]
| ~0,019 [[km/s²]]
|-
! align="left" | [[Día sideral|Período de rotación]]
Liña 75:
|-
! align="left" | [[Temperatura]]
| ~7478 K
|}
 
 
 
{{About||the asteroid|55 Pandora|the fictitious moon in the movie ''Avatar''|Fictional universe of Avatar}}
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{{Infobox Planet
| name = Pandora
| image = [[Image:Pandora PIA07632.jpg|300px]]
| caption = Pandora, as imaged by Cassini
| bgcolour = #a0ffa0
| discovery = yes
| discoverer = [[Stewart A. Collins|Collins]], [[Voyager 1]]
| discovered = October, 1980
| orbit_ref =<ref name="Spitale2006">{{cite journal|author= Spitale, J. N.; ''et al.''| title= ''The orbits of Saturn's small satellites derived from combined historic and ''Cassini'' imaging observations''| journal= The Astronomical Journal| year= 2006| volume= 132|issue=2|pages= 692–710|url=http://www.iop.org/EJ/article/1538-3881/132/2/692/205235.html|doi= 10.1086/505206}}</ref>
| epoch = December 31, 2003 ([[Julian day|JD]] 2453005.5)
| semimajor = 141,720 ± 10 km
| eccentricity = 0.0042
| period = 0.628504213 d
| inclination = 0.050 ± 0.004° to Saturn's equator
| satellite_of = [[Saturn]]
| physical_characteristics = yes
| dimensions = 103×80×64 km<ref name="Porco2006">{{cite journal|author= [[Carolyn C. Porco|Porco, C. C.]]; ''et al.''| title= ''Physical Characteristics and Possible Accretionary Origins for Saturn's Small Satellites''| journal= Bulletin of the American Astronomical Society| year= 2006| volume= 37| pages= 768| url=http://www.lpi.usra.edu/meetings/lpsc2006/pdf/2289.pdf}}</ref>
| mean_radius = 40.3 ± 2.2 km<ref name="Porco2006" />
| surface_area = ~21,000 km<sup>2</sup>
| volume = ~270,000 km<sup>3</sup>
| mass = 1.356 ± 0.022 {{e|17}} [[kilogram|kg]]<ref name="Spitale2006"/>
| density = 0.49 ± 0.08 g/cm³
| surface_grav = 0.0034 [[Acceleration|m/s<sup>2</sup>]]
| escape_velocity = ~0.019 km/s
| rotation = [[synchronous rotation|synchronous]]
| axial_tilt = zero
| albedo = 0.6
| single_temperature = ~78 K
}}
'''Pandora''' ({{pronEng|pænˈdɔərə}} {{respell|pan|DOHR|ə}}, or as in Greek ''Πανδώρα)'' is an [[inner satellite]] of [[Saturn]]. It was discovered in 1980 from photos taken by the ''[[Voyager 1]]'' probe, and was provisionally designated '''{{nowrap|S/1980 S 26}}'''.<ref>[http://cfa-www.harvard.edu/iauc/03500/03532.html IAUC 3532: ''Satellites of Saturn''] October 31, 1980 (discovery)</ref> In late 1985 it was officially named after [[Pandora]] from [[Greek mythology]].<ref>[http://cfa-www.harvard.edu/iauc/04100/04157.html IAUC 4157: ''Satellites of Saturn and Pluto''] January 3, 1986 (naming the moon)</ref> It is also designated as '''{{nowrap|Saturn XVII}}'''.<ref name="Gazetteer">{{cite web |url=http://planetarynames.wr.usgs.gov/append7.html |title=Planet and Satellite Names and Discoverers |work=USGS.gov |date=July 21, 2006 |accessdate=August 7, 2006}}</ref>