(54) Alexandra
Asteroid (54) Alexandra |
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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
- List of asteroids with references and web links (see also infobox)