54 Alexandra

54 Alexandra

Orbital characteristics 1
Orbit type	Main belt
Semimajor axis	2.713 AU
Perihelion distance	2.180 AU
Aphelion distance	3.247 AU
Orbital period	4.47 years
Inclination	11.81°
Eccentricity	0.196
Physical characteristics 1
Diameter	165.8 km
Rotation period 3	7.024 hours
Spectral class	C
Abs. magnitude	7.66
Albedo 4	0.056
History 2
Discoverer	H. Goldschmidt, 1858

54 Alexandra is a very large and dark main belt asteroid.

It was discovered by H. Goldschmidt on September 10, 1858 and named after the German explorer Alexander von Humboldt.