Elara (muin)

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Elara
Elara2-LB1-mag17.jpg
Elara near the glare o bricht Jupiter
Discovery
Discovered bi C. D. Perrine
Discovery date Januar 5, 1905[1][2]
Orbital chairactereestics
Mean orbit radius
11,740,000 km (0.07810 AU)[3]
Eccentricity 0.22[3]
259.64 d (0.708 a)[3]
3.27 km/s[3]
Inclination 26.63° (tae the ecliptic)
30.66° (tae Jupiter's equator)[3]
Satellite o Jupiter
Pheesical chairacteristics
Mean radius
43 km[4]
~23,200 km2
Vollum ~333,000 km3
Mass 8.7×1017 kg
Mean density
2.6 g/cm3 (assumed)[4]
~0.031 m/s2 (0.003 g)
~0.052 km/s
~0.5 d (12 h)
Albedo 0.04 (assumed)[4]
Temperatur ~124 K
16.3[4]

Elara (Greek: Ελάρα) is a prograde irregular satellite o Jupiter. It wis discovered bi Charles Dillon Perrine at Lick Observatory in 1905.[1][2] It is the aicht lairgest muin o Jupiter an is named efter Elara, ane o Zeus's luvers an the mither o the giant Tityos.[5]

References[eedit | eedit soorce]

  1. 1.0 1.1 Perrine, C. D. (1905-02-27). "Satellites of Jupiter". Harvard College Observatory Bulletin. 178. 
  2. 2.0 2.1 Perrine, C. D. (1905). "The Seventh Satellite of Jupiter". Publications of the Astronomical Society of the Pacific. 17 (101): 62–63. Bibcode:1905PASP...17...56.. doi:10.1086/121624. JSTOR 40691209. 
  3. 3.0 3.1 3.2 3.3 3.4 Jacobson, R. A. (2000). "The orbits of outer Jovian satellites". Astronomical Journal. 120 (5): 2679–2686. Bibcode:2000AJ....120.2679J. doi:10.1086/316817. 
  4. 4.0 4.1 4.2 4.3 "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). Retrieved 2009-08-10. 
  5. Marsden, Brian G. (October 7, 1975). "Satellites of Jupiter". International Astronomical Union. Archived frae the oreeginal on February 22, 2014.