53 Kalypso

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=53 Kalypso
discoverer=Karl Theodor Robert Luther
discovered=April 4, 1858
alt_names=
mp_category=Main belt
epoch=December 31, 2006 (JD 2454100.5)
semimajor=391.903 Gm (2.620 AU)
perihelion=311.998 Gm (2.086 AU)
aphelion=471.807 Gm (3.154 AU)
eccentricity=0.204
period=1548.736 d (4.24 a)
inclination=5.153°
asc_node=143.813°
arg_peri=312.330°
mean_anomaly=98.113°
avg_speed=18.21 km/s
dimensions=115.4 km
mass=1.6e|18 kg
density=? g/cm³
surface_grav=0.0323 m/s²
escape_velocity=0.0610 km/s
rotation=? d
spectral_type=?
abs_magnitude=8.81
albedo=0.040 [ [http://www.psi.edu/pds/resource/albedo.html Asteroid Data Sets ] ]
single_temperature=~172 K

53 Kalypso (pronEng|kəˈlɪpsoʊ) is a large and very dark main belt asteroid. It was discovered by R. Luther on April 4, 1858. It is named after Calypso, a sea nymph in Greek mythology. Calypso is also the name of a moon of Saturn.

References