Discover

'156 Xanthippe'

Orbital characteristics [ftp://ftp.lowell.edu/pub/elgb/astorb.html 1]
Orbit type	Main belt
Semimajor axis	2.732 AU
Perihelion distance	2.125 AU
Aphelion distance	3.339 AU
Orbital period	4.52 years
Inclination	9.75°
Eccentricity	0.222
Physical characteristics [ftp://ftp.lowell.edu/pub/elgb/astorb.html 1]
Diameter	121 km
Rotation period	22.37 hours
Spectral class	C
Abs. magnitude	8.64
Albedo 4	0.042
History 2
Discoverer	J. Palisa, 1875

'156 Xanthippe' is a large main belt asteroid. It has a carbonaceous composition and an extremely dark surface. It is named after Xanthippe, the wife of Socrates.
It was discovered by J. Palisa on November 22, 1875.