99 Dike

Infobox Planet | minorplanet = yes | width = 25em | bgcolour = #FFFFC0
name=99 Dike
discovery=yes
discovery_ref= [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html]
discoverer=Alphonse Borrelly
discovered=May 28, 1868
alt_names=A915 BA; 1935 UC; 1935 YL; 1939 UT; 1948 UE; 1948 WC; 1961 XJ; 1974 VB
mp_category=Main belt
orbit_ref= [ftp://ftp.lowell.edu/pub/elgb/astorb.html]
epoch=December 31, 2006 (JD 2454100.5)
semimajor=398.467 Gm (2.664 AU)
perihelion=320.005 Gm (2.139 AU)
aphelion=476.928 Gm (3.188 AU)
eccentricity=0.197
period=1587.810 d (4.35 a)
inclination=13.858°
asc_node=41.678°
arg_peri=196.045°
mean_anomaly=304.205°
avg_speed=18.07 km/s
physical_characteristics=yes
dimensions=71.9 km
mass=~3.9e|17 kg
density=2.0? g/cm³
surface_grav=~0.0201 m/s²
escape_velocity=~0.0380 km/s
sidereal_day=0.4313 d (10.35 h) [* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=99 JPL Small-Body Database Browser ] ]
axial_tilt=?° | pole_ecliptic_lat=? | pole_ecliptic_lon=?
spectral_type=C
abs_magnitude=9.43
albedo=0.058 [ [http://www.psi.edu/pds/resource/albedo.html Asteroid Data Sets ] ]
single_temperature=~172 K

99 Dike "(dye'-kee," IPAEng|ˈdaɪki) is a quite large and dark main belt asteroid. Dike was discovered by Alphonse Borrelly on May 28, 1868. It was his first asteroid discovery. It is named after Dike, the Greek goddess of moral justice.

References