- 2456 Palamedes
Infobox Planet | minorplanet = yes | width = 25em | bgcolour = #FFFFC0
name=2456 Palamedes
discovery=yes
discovery_ref= [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html]
discoverer=Purple Mountain Observatory
discovered=January 30 ,1966
designations = yes
alt_names=1966 BA1
mp_category=Jupiter Trojan
orbit_ref= [ftp://ftp.lowell.edu/pub/elgb/astorb.html]
epoch=February 04 ,2008 (JD 2454500.5)
semimajor=768.221 Gm (5.135 AU)
perihelion=710.392 Gm (4.749 AU)
aphelion=826.050 Gm (5.522 AU)
eccentricity=0.075
period=4250.496 d (11.64 a)
inclination=13.907°
asc_node=327.408°
arg_perihelion=93.744°
mean_anomaly=272.936°
avg_speed=13.12 km/s
physical_characteristics=yes
dimensions=91.7 km
mass=8.1e|17 kg
density=2.0 g/cm³
surface_grav=0.0256 m/s²
escape_velocity=0.0485 km/s
sidereal_day=? d
axial_tilt=?° | pole_ecliptic_lat=? | pole_ecliptic_lon=?
spectral_type=?
abs_magnitude=9.6
albedo=0.10
single_temperature=~123 K2456 Palamedes is a
Jupiter trojan asteroid that orbits in the L4Lagrangian point of theSun -Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Palamedes. It was discovered by thePurple Mountain Observatory inNanjing ,China onJanuary 30 ,1966 .References
External links
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.txt Discovery Circumstances: Numbered Minor Planets]
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2456;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2456 Ephemeris]
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