- 30 Urania
Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=30 Urania
discoverer=J. R. Hind
discovered=July 22 ,1854
alt_names=1948 JK
mp_category=Main belt
epoch=June 14 ,2006 (JD 2453900.5)
semimajor=354.077 Gm (2.367 AU)
perihelion=309.338 Gm (2.068 AU)
aphelion=398.817 Gm (2.666 AU)
eccentricity=0.126
period=1330.017 d (3.64 a)
inclination=2.097°
asc_node=307.820°
arg_peri=86.560°
mean_anomaly=196.549°
avg_speed=19.28 km/s
dimensions=100.15 km MPCit_JPL|30
mass=1.1e|18? kg
density=2.0? g/cm³
surface_grav=0.0280? m/s²
escape_velocity=0.0529? km/s
rotation=0.57025 d (13.686 h) [http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_DERIVED_LIGHTCURVE_V8_0/data/lc.tab]
spectral_type=S
magnitude = 9.36 (brightest)
abs_magnitude=7.57
albedo=0.1714 (geometric)MPCit_JPL|30
single_temperature=~177 K30 Urania (pronEng|jʊˈreɪniə, _gr. "Ουρανία)" is a large
Main belt asteroid .Urania was discovered by J. R. Hind on
July 22 ,1854 . It was his last asteroid discovery. It is named afterUrania , the GreekMuse ofastronomy .References
External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=30;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=30 Ephemeris]
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