40 Harmonia

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 K

40 Harmonia (IPAEng|harˈmoʊniə) is a large main belt asteroid.

It was discovered by H. Goldschmidt on March 31, 1856 and named after Harmonia, the Greek goddess of harmony. The name was chosen to mark the end of the Crimean 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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