64 Angelina

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=64 Angelina
discoverer=Ernst Wilhelm Tempel
discovered=March 4, 1861
alt_names=
mp_category=Main belt
epoch=December 31, 2006 (JD 2454100.5)
semimajor=401.580 Gm (2.684 AU)
perihelion=351.784 Gm (2.352 AU)
aphelion=451.375 Gm (3.017 AU)
eccentricity=0.124
period=1606.452 d (4.40 a)
inclination=1.308°
asc_node=309.285°
arg_peri=179.641°
mean_anomaly=107.758°
avg_speed=18.11 km/s
dimensions= 48x53 km
mass=?e|? kg
density=? g/cm³
surface_grav=? m/s²
escape_velocity=? km/s
rotation= 0.365 d
spectral_type=E
abs_magnitude=7.67
albedo=0.157
single_temperature=~170 K

64 Angelina is a medium-sized Main belt asteroid and is an uncommon E-type asteroid. It is the third largest E-type after 44 Nysa and 55 Pandora. It was formerly thought to be the largest of this class but recent work [http://iota.jhuapl.edu/iotam709.htm] has shown that its diameter is only a quarter of what was previously thought.

It was discovered on March 4, 1861 by a prolific comet discoverer, E. W. Tempel. It was first of his five asteroid discoveries.

E-type asteroids show unusual brightening when at close opposition to the Sun. This phenomenon is also known in Jupiter's moons Io, Ganymede and Europa, and also Saturn's moon Iapetus.