14 Irene

14 Irene

A three dimensional model of 14 Irene from light curve inversion
Discovery
Discovered by John Russell Hind
Discovery date May 19, 1851
Designations
Pronunciation /aɪˈriːniː/ eye-REE-nee
Named after
 Irēnē
A906 QC;
A913 EA;
1952 TM
Main belt
Orbital characteristics[1]
Epoch July 14, 2004 (JD 2453200.5)
Aphelion 451.858 Gm (3.020 AU)
Perihelion 321.602 Gm (2.150 AU)
386.730 Gm (2.585 AU)
Eccentricity 0.168
1518.176 d (4.16 a)
18.52 km/s
326.489°
Inclination 9.106°
86.493°
96.473°
Physical characteristics
Dimensions 167×153×139km[2]
152km (Dunham)[1]
Mass 8.2×1018 kg[2]
Mean density
 4.42±1.59 g/cm³[2]
0.051 m/s²
0.096 km/s
0.6275 d (15.06 h)[1][3]
Albedo 0.159[1]
Temperature ~170 K
Spectral type
 S-type asteroid[1]
8.85[4] to 12.30
6.30[1]
0.17" to 0.052"

    14 Irene is a large main-belt asteroid, discovered by John Russell Hind on May 19, 1851.

    14 Irene was named after Irēnē, a personification of peace in Greek mythology. She was one of the Horae, daughter of Zeus and Themis. The name was suggested by Sir John Herschel.[5] Hind wrote,

    "You will readily discover that this name [...] has some relation to this event (the Great Industrial Exhibition) which is now filling our metropolis [London] with the talent of all civilised nations, with those of Peace, the productions of Art and Science, in which all mankind must feel an interest."

    The Great Exhibition of the Works of Industry of All Nations in the Crystal Palace of Hyde Park, London, ran from May 1 until October 18, 1851.

    Hind suggested that the symbol for the asteroid should be "A dove carrying an olive-branch, with a star on its head",[6] but an actual drawing of the symbol was never made before the use of graphical symbols to represent asteroids was dropped entirely.[7]

    The fairly flat Irenian lightcurves indicate somewhat spherical proportions. There have been four reported stellar occultation events by Irene.

    See also

    Notes

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 14 Irene" (2008-04-14 last obs). Retrieved 2008-11-27.
    2. 1 2 3 Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2008-11-27.
    3. ↑ "Asteroid Lightcurve Parameters". Planetary Science Institute. Retrieved 2008-11-03.
    4. ↑ "AstDys (14) Irene Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-06-26.
    5. ↑ Schmadel, Lutz D. (2003). Dictionary of minor planet names. 1 (5th ed.). Berlin Heidelberg New York: Springer-Verlag. p. 16. ISBN 3-540-00238-3.
    6. ↑ Hind, John Russell (1852). "From a Letter of Mr. Hind to the Editor". Astron. J. 2: 22–23. Bibcode:1851AJ......2...22H. doi:10.1086/100162.
    7. ↑ When did the asteroids become minor planets?

    External links

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