23 Thalia

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=23 Thalia
discoverer=J. R. Hind
discovered=December 15, 1852
alt_names=1938 CL; mp|1974 QT|2
mp_category=Main belt
epoch=June 14, 2006 (JD 2453900.5)
semimajor=393.073 Gm (2.628 AU)
perihelion=301.483 Gm (2.015 AU)
aphelion=484.663 Gm (3.240 AU)
eccentricity=0.233
period=1555.679 d (4.26 a)
inclination=10.145°
asc_node=67.228°
arg_peri=59.311°
mean_anomaly=328.687°
avg_speed=18.12 km/s
dimensions=107.5 km
mass=1.3e|18? kg
density=2.0? g/cm³
surface_grav=0.0300? m/s²
escape_velocity=0.0568? km/s
rotation=0.5128 d (12.308 h) [ [http://www.psi.edu/pds/archive/lc.html] Dead link|date=March 2008]
spectral_type=S
magnitude = 9.18 (brightest)
abs_magnitude=6.95
albedo=0.2536 (geometric) [http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab]
single_temperature=~164 K

23 Thalia (pronEng|θəˈlaɪə, _gr. "Θάλεια)" is a large main belt asteroid.

It was discovered by J. R. Hind on December 15, 1852 and named after Thalia, the Muse of comedy and pastoral poetry in Greek mythology.

References

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=23;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=23 Ephemeris]