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 K

30 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 after Urania, the Greek Muse of astronomy.

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]