Rhea

From Terpsichore
Revision as of 22:56, 9 July 2023 by Spacegod (talk | contribs)
Rhea
PIA07763 Rhea full globe5.jpg
Cassini mosaic of Rhea
Discovery
Discovered byG. D. Cassini[1]
Discovery dateDecember 23, 1672[1]
Designations
Designation
Saturn V
Pronunciation/ˈr.ə/[2]
Named after
Ῥέᾱ Rheā
AdjectivesRhean /ˈr.ən/[3]
Orbital characteristics[4]
527108 km
Eccentricity0.0012583
4.518212 d
8.48 km/s[lower-alpha 1]
Inclination0.345° (to Saturn's equator)
Satellite ofSaturn
Physical characteristics
Dimensions1532.4 × 1525.6 × 1524.4 km [5]
Mean radius
763.5±0.5 km[6]
7337000 km2
Mass(2.3064854±0.0000522)×1021 kg[6] (~3.9×10−4 Earths)
Mean density
1.2372±0.0029 g/cm3[6]
0.264 m/s2
0.3911±0.0045[7] (disputed/unclear[8])
0.635 km/s
4.518212 d
(synchronous)
zero
Surface temp. min mean max
Kelvin 53 K   99 K
10 [9]

Rhea (/ˈr.ə/) is the second-largest moon of Saturn and the ninth-largest moon in the Sol System, with a surface area that is comparable to the area of Australia. It is the smallest body in the Sol System for which precise measurements have confirmed a shape consistent with hydro-static equilibrium.[11] It was discovered in 1672 by Giovanni Domenico Cassini.


Primary Outpost

Scrollable Rhea Primary Outpost Map

Image of Rhea Primary Outpost Map

Whittaker Dome

Notes

  1. Calculated on the basis of other parameters.

References

  1. 1.0 1.1 Rhea: Saturn's dirty snowball moon
  2. Consulmagno, G.; Ryche, H. (Feb 9, 1982). "Pronouncing the names of the moons of Saturn" (PDF). EOS. 63 (6): 146–147. doi:10.1029/EO063i006p00146. Retrieved Nov 30, 2022.
  3. Moore et al. (1984) "The Geomorphology of Rhea", Proceedings of the fifteenth Lunar and Planetary Science, Part 2, p C-791–C-794
  4. Natural Satellites Ephemeris Service Minor Planet Center
  5. Roatsch, T.; Jaumann, R.; Stephan, K.; Thomas, P. C. (2009). "Cartographic Mapping of the Icy Satellites Using ISS and VIMS Data". Saturn from Cassini-Huygens. pp. 763–781. doi:10.1007/978-1-4020-9217-6_24. ISBN 978-1-4020-9216-9.
  6. 6.0 6.1 6.2 Jacobson, Robert. A. (1 November 2022). "The Orbits of the Main Saturnian Satellites, the Saturnian System Gravity Field, and the Orientation of Saturn's Pole*". The Astronomical Journal. 164 (5): 199. Bibcode:2022AJ....164..199J. doi:10.3847/1538-3881/ac90c9. S2CID 252992162.
  7. Anderson, J. D.; Schubert, G. (2007). "Saturn's satellite Rhea is a homogeneous mix of rock and ice". Geophysical Research Letters. 34 (2): L02202. Bibcode:2007GeoRL..34.2202A. doi:10.1029/2006GL028100.
  8. Template:Cite conference
  9. Observatorio ARVAL (April 15, 2007). "Classic Satellites of the Solar System". Observatorio ARVAL. Retrieved 2011-12-17.
  10. 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. S2CID 21932253. (supporting online material, table S1)
  11. http://www.ciclops.org/media/sp/2011/6794_16344_0.pdf Template:Webarchive Template:Bare URL PDF