431 Nephele

Minor Planet | name=431 Nephele
discoverer=Auguste Charlois
discovery_date=December 18, 1897
designations=1897 DN
category=Main belt (Themis)
epoch=30 January, 2005 (JD 2453400.5)
semimajor=469.489 Gm (3.138 AU)
perihelion=387.107 Gm (2.588 AU)
aphelion=551.872 Gm (3.689 AU)
eccentricity=0.175
period=2030.677 d (5.56 a)
inclination=1.827°
asc_node=117.417°
arg_peri=212.678°
mean_anomaly=210.253°
speed=16.81 km/s
dimensions=95.0 km
mass="unknown"
density="unknown"
gravity="unknown"
escape_velocity="unknown"
rotation="unknown"
spectral_class=C
abs_mag=8.72
albedo="unknown"
temperature="unknown"

431 Nephele is a large Main belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.

It was discovered by Auguste Charlois on December 18, 1897 in Nice.