1583 Antilochus

Infobox Planet | minorplanet = yes | width = 25em | bgcolour = #FFFFC0
name=1583 Antilochus
discovery=yes
discovery_ref= [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html]
discoverer=Sylvain Julien Victor Arend
discovered=September 19, 1950
designations = yes
alt_names=1950 SA
mp_category=Jupiter Trojan
orbit_ref= [ftp://ftp.lowell.edu/pub/elgb/astorb.html]
epoch=February 04, 2008 (JD 2454500.5)
semimajor=764.370 Gm (5.109 AU)
perihelion=724.079 Gm (4.840 AU)
aphelion=804.661 Gm (5.379 AU)
eccentricity=0.053
period=4218.575 d (11.55 a)
inclination=28.551°
asc_node=221.372°
arg_perihelion=185.945°
mean_anomaly=303.165°
avg_speed=13.17 km/s
physical_characteristics=yes
dimensions=101.6 km
mass=1.1e|18 kg
density=2.0 g/cm³
surface_grav=0.0284 m/s²
escape_velocity=0.0537 km/s
sidereal_day=? d
axial_tilt=?° | pole_ecliptic_lat=? | pole_ecliptic_lon=?
spectral_type=D
abs_magnitude=8.60
albedo=0.10
single_temperature=~123 K

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.

External links

* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.txt Discovery Circumstances: Numbered Minor Planets]
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1583;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=1583 Ephemeris]