624 Hektor

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624 Hektor
Discovery A (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html)
Discoverer August Kopff
Discovery date February 10, 1907
Alternate
designations
1907 XM; 1948 VD B (http://cfa-www.harvard.edu/iau/MPDes.html)
Category Trojan asteroid
Orbital elements C (http://asteroid.lowell.edu/)
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.024
Semi-major axis (a) 781.183 Gm (5.222 AU)
Perihelion (q) 762.145 Gm (5.095 AU)
Aphelion (Q) 800.220 Gm (5.349 AU)
Orbital period (P) 4358.521 d (11.93 a)
Mean orbital speed 13.03 km/s
Inclination (i) 18.198
Longitude of the
ascending node
(Ω)
342.791
Argument of
perihelion
(ω)
183.579
Mean anomaly (M) 94.752
Physical characteristics
Dimensions 370 195 km
Mass ~1.41019 kg
Density 2 ? g/cm
Surface gravity ~0.067 m/s
Escape velocity ~0.13 km/s
Rotation period 0.2884 d 1 (http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm)
Spectral class D
Absolute magnitude 7.49
Albedo 0.087 2 (http://www.psi.edu/pds/archive/astdata/ALBEDOS/albedos.tab)
Mean surface
temperature
~122 K

624 Hektor is the largest of the Jovian Trojan asteroids. It was discovered in 1907 by August Kopff.

Hektor is thought to be one of the most elongated bodies in the solar system, being 370 195 km. Although its shape has never been imaged clearly, it may look something like 216 Kleopatra, or it may be two separate bodies orbiting very close together. It is a D-type asteroid, dark and reddish in colour.

Hektor lies in Jupiter's leading Lagrangian point, L4, called the 'Greek' node after one of the two sides in the legendary Trojan War. Ironically, Hektor is named after the Trojan hero Hektor, and is thus one of two Trojan asteroids that is "misplaced" in the wrong camp (the other being 617 Patroclus in the Trojan node).

Hektor in fiction


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The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)
de:Hektor (Asteroid)

fr:(624) Hector

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