89 Julia

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=89 Julia
discoverer=Édouard Stephan
discovered=August 6, 1866
alt_names=
mp_category=Main belt
epoch=December 31, 2006 (JD 2454100.5)
semimajor=381.456 Gm (2.550 AU)
perihelion=311.336 Gm (2.081 AU)
aphelion=451.576 Gm (3.019 AU)
eccentricity=0.184
period=1487.227 d (4.07 a)
inclination=16.142°
asc_node=311.648°
arg_peri=44.990°
mean_anomaly=129.159°
avg_speed=18.49 km/s
dimensions=151.5 km
mass=3.6e|18 kg
density=? g/cm³
surface_grav=0.0423 m/s²
escape_velocity=0.0801 km/s
rotation=? d
spectral_type=S
magnitude = 8.88 to 12.73
abs_magnitude=6.60
albedo=0.176 (geometric) [ [http://www.psi.edu/pds/resource/albedo.html Asteroid Data Sets ] ]
angular_size = 0.18" to 0.052"
single_temperature=~174 K

89 Julia is a large main belt asteroid. It was discovered by a French astronomer Édouard Stephan on August 6, 1866. It was first of his two asteroid discoveries; the other was 91 Aegina. It is believed to be named after Saint Julia of Corsica. A stellar occultation by Julia was observed on December 20, 1985.

References

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=89;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=89 Ephemeris]