(54) Alexandra

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Asteroid
(54) Alexandra
Properties of the orbit ( animation )
Orbit type Middle main belt
Major semi-axis 2.713  AU
eccentricity 0.197
Perihelion - aphelion 2.177 AU - 3.249 AU
Inclination of the orbit plane 11.8 °
Length of the ascending node 313.4 °
Argument of the periapsis 345.8 °
Time of passage of the perihelion March 6, 2010
Sidereal period 4 a 171 d
Mean orbital velocity 17.9 km / s
Physical Properties
Medium diameter 167 km
Albedo 0.0555
Rotation period 7 h 1 min
Absolute brightness 7.66 likes
Spectral class C.
history
Explorer HMS Goldschmidt
Date of discovery September 10, 1858
Another name 1950 BT, 1974 HG 1
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(54) Alexandra is an asteroid of the main asteroid belt , which was discovered on September 10, 1858 by Hermann Mayer Salomon Goldschmidt .

The celestial body was named after the German natural scientist Alexander von Humboldt .

Alexandra has a diameter of 166 km. It has a dark surface typical of C-type asteroids with a geometric albedo of 0.056. It rotates around its own axis in around 7 hours.

See also