40 Harmonia

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40 Harmonia
Discovery
Discovered by H. Goldschmidt
Discovery date March 31, 1856
Designations
Alternative names 1950 XU
Minor planet
category		 Main belt
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 355.021 Gm (2.373 AU)
Perihelion 323.537 Gm (2.163 AU)
Semi-major axis 339.279 Gm (2.268 AU)
Eccentricity 0.046
Orbital period 1247.514 d (3.42 a)
Average orbital speed 19.77 km/s
Mean anomaly 249.120°
Inclination 4.256°
Longitude of ascending node 94.287°
Argument of perihelion 268.988°
Physical characteristics
Dimensions 107.6 km
Mass ~1.3×1018 kg
Mean density 2.0? g/cm³
Equatorial surface gravity ~0.0301 m/s²
Escape velocity ~0.0569 km/s
Rotation period 0.371 d (8.91 h) [1]
Albedo 0.242 (geometric)[2]
Temperature ~177 K
Spectral type S
Apparent magnitude 9.31 (brightest)
Absolute magnitude 7.0

40 Harmonia (IPA: /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.

[edit] References

  1. ^ http://charlie.psi.edu/pds/
  2. ^ [1][dead link]

[edit] External links

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