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사용자:Scarecrews/유저노트 1: 두 판 사이의 차이

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{{위성 정보|
|이름=이아페투스
| name = Iapetus
|로마자이름=Iapetus
| alt_names = Saturn VIII
|그림=Iapetus.jpg
| adjectives = Iapetian, Japetian
|그림설명= [[카시니-하위헌스|카시니 탐사선]]이 2004년 12월 31일에<br>촬영한 이아페투스
| image = Iapetus.jpg
|발견자=[[조반니 도메니코 카시니]]
| caption = Natural color photomosaic combining ''Cassini'' images taken on 31 December 2004. It shows the dark Cassini Regio and its border with the bright Roncevaux Terra, several large craters (Falsaron above center, [[Turgis (crater)|Turgis]], the largest, at right), and the equatorial ridge (the Toledo and Tortelosa Montes).
|발견일=[[1671년]] [[10월 25일]]
| discovery = yes
|이심률=0.028 612 5
| discoverer = [[Giovanni Domenico Cassini|G. D. Cassini]]
|모행성=[[토성]]
| discovered = October 25, 1671
|궤도 장반경=3 560 820 km
| semimajor = {{val|3560820|u=km}}
|공전 주기=79.321 5 [[일]]
| eccentricity = {{val|0.0286125}} <ref>[http://home.gwi.net/~pluto/mpecs/ss08.htm#elements Pseudo-MPEC for Saturn VIII] {{webarchive |url=https://web.archive.org/web/20120222025902/http://home.gwi.net/~pluto/mpecs/ss08.htm#elements |date=February 22, 2012 }}</ref>
|공전 속도=3.26 km/s
| period = {{val|79.3215|u=[[Day|d]]}} <!--Computed using the http://cfa-www.harvard.edu/iau/NatSats/NaturalSatellites.html µ value-->
|궤도 경사=17.28°(황도면에서)<br />15.47°(토성의 적도면에서)<br />8.13°(라플라스(Laplace)면에서)
| avg_speed = 3.26 km/s<!---{{efn|name=calculated}}--->
|반지름=747.4×712.4km
| inclination =
|질량=(1.805 635 ± 0.000 375){{e|21}} kg<ref name="Jacobson Antreasian et al. 2006">{{저널 인용| doi=10.1086/508812| last1=Jacobson | first1=R. A.| last2=Antreasian | first2=P. G.| last3=Bordi | first3=J. J.| last4=Criddle | first4=K. E.| last5=Ionasescu | first5=R.| last6=Jones | first6=J. B.| last7=Mackenzie | first7=R. A.| last8=Meek | first8=M. C.| last9=Parcher | first9=D.| first10=F. J. | last10=Pelletier| first11=W. M. | last11=Owen, Jr.| first12=D. C. | last12=Roth| first13=I. M. | last13=Roundhill| first14=J. R. | last14=Stauch| date=December 2006| title=The Gravity Field of the Saturnian System from Satellite Observations and Spacecraft Tracking Data| journal=The Astronomical Journal| volume=132 | issue=6 | pages=2520–2526| url=http://iopscience.iop.org/1538-3881/132/6/2520/fulltext| bibcode=2006AJ....132.2520J| ref={{sfnRef|Jacobson Antreasian et al.|2006}}}}</ref>
{{plainlist |
|밀도=1.083 0 ± 0.006 6 g/cm<sup>3</sup><ref name="Roatsch et al. 2009">{{서적 인용| doi = 10.1007/978-1-4020-9217-6_24| last1 = Roatsch| first1 = T.| last2 = Jaumann| first2 = R.| last3 = Stephan| first3 = K.| last4 = Thomas| first4 = P. C.| year = 2009| chapter = Cartographic Mapping of the Icy Satellites Using ISS and VIMS Data| title = Saturn from Cassini-Huygens| pages = 763–781| isbn = 978-1-4020-9216-9| pmid = | pmc = | ref = {{sfnRef|Roatsch Jaumann et al.|2009}}}}</ref>
* 17.28° (to the ecliptic)
|중력=0.223 m/s<sup>2</sup>
* 15.47° (to Saturn's equator)
|탈출 속도=0.572 km/s
* 8.13° (to [[Laplace plane]])<ref name="jpl-ssd">{{cite web| date = 2009-12-17| title = Planetary Satellite Mean Orbital Parameters| publisher = JPL/NASA| author = Jacobson, R.A. (2009) SAT317| url = http://ssd.jpl.nasa.gov/?sat_elem#saturn| accessdate = 2011-01-15}}
|반사율=10.2-11.9
</ref>}}
| satellite_of = [[Saturn]]
| physical_characteristics = yes
| dimensions = 1,492.0&thinsp;×&thinsp;1,492.0&thinsp;×&thinsp;1,424 km <ref name="Roatsch et al. 2009" />
| mean_radius = {{val|734.5|2.8|u=km}} <ref name="Roatsch et al. 2009" />
| surface_area = {{val|6700000|u=km<sup>2</sup>}}
| mass = {{val|1.805635|0.000375|e=21|u=kg}} <ref name="Jacobson Antreasian et al. 2006" />
| density = {{val|1.088|0.013|u=g/cm³}} <ref name="Roatsch et al. 2009" />
| surface_grav = {{Gr|1.805|734.5|3}} [[Acceleration|m/s<sup>2</sup>]]
| escape_velocity = {{V2|1.805|734.5|3}} km/s
| rotation = {{val|79.3215|u=d}} <br> ([[Synchronous rotation|synchronous]])
| axial_tilt = zero
| albedo = 0.05–0.5<ref name="fact">{{cite web | first = David R.| last = Williams| title = Saturnian Satellite Fact Sheet| work = NASA| url = http://nssdc.gsfc.nasa.gov/planetary/factsheet/saturniansatfact.html| accessdate = 2007-11-04}}
</ref>
| single_temperature = 90–130 [[Kelvin|K]]
| magnitude = 10.2–11.9<ref name="Observatorio ARVAL" />
}}
 
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