- 40 Harmonia
Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=40 Harmonia
discoverer=H. Goldschmidt
discovered=March 31 ,1856
alt_names=1950 XU
mp_category=Main belt
epoch=December 31 ,2006 (JD 2454100.5)
semimajor=339.279 Gm (2.268 AU)
perihelion=323.537 Gm (2.163 AU)
aphelion=355.021 Gm (2.373 AU)
eccentricity=0.046
period=1247.514 d (3.42 a)
inclination=4.256°
asc_node=94.287°
arg_peri=268.988°
mean_anomaly=249.120°
avg_speed=19.77 km/s
dimensions=107.6 km
mass=~1.3e|18 kg
density=2.0? g/cm³
surface_grav=~0.0301 m/s²
escape_velocity=~0.0569 km/s
rotation=0.371 d (8.91 h) [http://charlie.psi.edu/pds/]
spectral_type=S
magnitude = 9.31 (brightest)
abs_magnitude=7.0
albedo=0.242 (geometric) [ [http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab] Dead link|date=March 2008]
single_temperature=~177 K40 Harmonia (IPAEng|harˈmoʊniə) is a large
main belt asteroid .It was discovered by H. Goldschmidt on
March 31 ,1856 and named afterHarmonia , the Greek goddess of harmony. The name was chosen to mark the end of theCrimean War .References
External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=40;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=40 Ephemeris]
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