Back Rea (maan) Afrikaans ريا (قمر) Arabic رئا (اویدو) AZB Рэя (спадарожнік Сатурна) Byelorussian Рея (спътник) Bulgarian Rea (satèl·lit) Catalan Rhea (ôi-sĭng) CDO ڕیا (مانگ) CKB Rea Corsican Rhea (měsíc) Czech
&sq=starlink&lang=en&file=File:Rhea_by_Cassini_21_Nov_2009.jpg) Rhea, as imaged by the Cassini orbiter, November 2009 | |||||||||
| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | G. D. Cassini[1] | ||||||||
| Discovery date | December 23, 1672[1] | ||||||||
| Designations | |||||||||
Designation | Saturn V | ||||||||
| Pronunciation | /ˈriː.ə/[2] | ||||||||
Named after | Ῥέᾱ Rheā | ||||||||
| Adjectives | Rhean /ˈriː.ən/[3] | ||||||||
| Orbital characteristics [4] | |||||||||
| 527108 km | |||||||||
| Eccentricity | 0.0012583 | ||||||||
| 4.518212 d | |||||||||
Average orbital speed | 8.48 km/s[a] | ||||||||
| Inclination | 0.345° (to Saturn's equator) | ||||||||
| Satellite of | Saturn | ||||||||
| Physical characteristics | |||||||||
| Dimensions | 1532.4 × 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 | |||||||||
| Albedo | 0.949±0.003 (geometric) [9] | ||||||||
| |||||||||
| 10 [10] | |||||||||
Rhea (/ˈriː.ə/) is the second-largest moon of Saturn and the ninth-largest moon in the Solar System, with a surface area that is comparable to the area of Australia. It is the smallest body in the Solar System for which precise measurements have confirmed a shape consistent with hydrostatic equilibrium.[11] It was discovered in 1672 by Giovanni Domenico Cassini.
- ^ a b Tillman, Nola Taylor (2016-06-29). "Rhea: Saturn's dirty snowball moon". space.com.
- ^ 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.
- ^ Moore et al. (1984) "The Geomorphology of Rhea", Proceedings of the fifteenth Lunar and Planetary Science, Part 2, p C-791–C-794
- ^ Cite error: The named reference
NSESwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Roatsch et al. 2009was invoked but never defined (see the help page). - ^ a b c 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.
- ^ 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.
- ^ Cite error: The named reference
Anderson2008was invoked but never defined (see the help page). - ^ Cite error: The named reference
Verbiscer et al. 2007was invoked but never defined (see the help page). - ^ Cite error: The named reference
Observatorio ARVALwas invoked but never defined (see the help page). - ^ Thomas, P.C. (2010). "Sizes, shapes, and derived properties of the saturnian satellites after the Cassini nominal mission" (PDF). Icarus. Archived from the original (PDF) on 2018-12-23.
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