Janus (muin)

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Janus
PIA12714 Janus crop.jpg
Janus as eemaged bi Cassini on 7 Apryle 2010: heichest-resolution full-disc eemage tae date
Discovery
Discovered biAudouin Dollfus
Discovery date15 December 1966
Designations
Named after
Janus
AdjectivesJanian
Orbital chairactereestics[1]
Epoch 31 December 2003 (JD 2 453 005.5)
151460±10 km
Eccentricity0.0068
0.694660342 d
Inclination0.163°±0.004° tae Saturn's equator
Satellite oSaturn
Pheesical chairacteristics
Dimensions203 × 185 × 152.6 km [2]
Mean radius
89.5±1.4 km [2]
Vollum≈ 716000 km3
Mass(1.8975±0.0012)×1018 kg[2]
Mean density
0.63±0.03 g/cm³[2]
0.011–0.017 m/s2[2]
synchronous
zero
Albedo0.71±0.02 (geometric) [3]

Janus is an inner satellite o Saturn. It is an aw kent as Saturn X. It is named efter the meethological Janus.

References[eedit | eedit soorce]

Soorces
  • Spitale, J. N.; Jacobson, R. A.; Porco, C. C.; Owen, W. M., Jr. (2006). "The orbits of Saturn's small satellites derived from combined historic and Cassini imaging observations" (PDF). The Astronomical Journal. 132 (2): 692–710. Bibcode:2006AJ....132..692S. doi:10.1086/505206.
  • Thomas, P. C. (July 2010). "Sizes, shapes, and derived properties of the saturnian satellites after the Cassini nominal mission" (PDF). Icarus. 208 (1): 395–401. Bibcode:2010Icar..208..395T. doi:10.1016/j.icarus.2010.01.025.CS1 maint: ref=harv (link)
  • Verbiscer, A.; French, R.; Showalter, M.; Helfenstein, P. (9 February 2007). "Enceladus: Cosmic Graffiti Artist Caught in the Act". Science. 315 (5813): 815. Bibcode:2007Sci...315..815V. doi:10.1126/science.1134681. PMID 17289992. Retrieved 20 December 2011. (supportin online material, table S1)