127 Johanna

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=127 Johanna
discoverer=Paul Henry and Prosper Henry
discovered=November 5, 1872
alt_names=
mp_category=Main belt
epoch=December 31, 2006 (JD 2454100.5)
semimajor=412.218 Gm (2.756 AU)
perihelion=385.859 Gm (2.579 AU)
aphelion=438.576 Gm (2.932 AU)
eccentricity=0.064
period=1670.707 d (4.57 a)
inclination=8.245°
asc_node=31.448°
arg_peri=91.496°
mean_anomaly=36.831°
avg_speed=17.92 km/s
dimensions=122 km
mass=?e|? kg
density=? g/cm³
surface_grav=? m/s²
escape_velocity=? km/s
rotation=? d
spectral_type=C
abs_magnitude=8.3
albedo=?
single_temperature=~168 K

127 Johanna is a large Main belt asteroid. It has a very dark surface and is probably a primitive composition of carbonates. It was discovered by P. M. Henry on November 5, 1872 and is believed to be named after Joan of Arc.