1583 Antilochus

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1583 Antilochus
Discovery[1] and designation
Discovered by Sylvain Julien Victor Arend
Discovery date September 19, 1950
Designations
Alternative names[1] 1950 SA
Minor planet
category
Jupiter Trojan
Epoch February 04, 2008 (JD 2454500.5)
Aphelion 804.661 Gm (5.379 AU)
Perihelion 724.079 Gm (4.840 AU)
Semi-major axis 764.370 Gm (5.109 AU)
Eccentricity 0.053
Orbital period 4218.575 d (11.55 a)
Average orbital speed 13.17 km/s
Mean anomaly 303.165°
Inclination 28.551°
Longitude of ascending node 221.372°
Dimensions 101.6 km
Mass 1.1×1018 kg
Mean density 2.0 g/cm³
Equatorial surface gravity 0.0284 m/s²
Equatorial escape velocity 0.0537 km/s
Sidereal rotation
period
? d
Axial tilt
Pole ecliptic latitude ?
Pole ecliptic longitude ?
Geometric albedo 0.10
Temperature ~123 K
Spectral type D
Absolute magnitude 8.60

1583 Antilochus is a Jupiter trojan asteroid that orbits in the L4 Lagrangian point of the Sun-Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Antilochus. It was discovered by Sylvain Julien Victor Arend on September 19, 1950 in Uccle, Belgium.

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