406 Erna

Minor Planet | name=406 Erna
discoverer=Auguste Charlois
discovery_date=August 22, 1895
designations=1895 CB
category=Main belt
epoch=30 January, 2005 (JD 2453400.5)
semimajor=435.972 Gm (2.914 AU)
perihelion=356.339 Gm (2.382 AU)
aphelion=515.605 Gm (3.447 AU)
eccentricity=0.183
period=1817.147 d (4.98 a)
inclination=4.198°
asc_node=315.863°
arg_peri=38.107°
mean_anomaly=336.544°
speed=17.45 km/s
dimensions=49.0 km
mass="unknown"
density="unknown"
gravity="unknown"
escape_velocity="unknown"
rotation="unknown"
spectral_class=P
abs_mag=10.36
albedo="unknown"
temperature="unknown"

406 Erna is a typical Main belt asteroid. It is classified as a P-type asteroid and is probably composed of primitive carbonaceus chondritic materials.

It was discovered by Auguste Charlois on August 22, 1895 in Nice.