21731 Zhuruochen

Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Zhuruochen
symbol =


caption =
discovery = yes
discovery_ref =
discoverer = Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site = Socorro
discovered = September 9, 1999
designations = yes
mp_name = 21731
alt_names = 1999 RT142
mp_category =
orbit_ref =
epoch = May 14, 2008
aphelion = 2.7219149
perihelion = 2.4691679
semimajor =
eccentricity = 0.0486887
period = 1527.3562875
avg_speed =
inclination = 15.62867
asc_node = 159.75877
mean_anomaly = 177.23409
arg_peri = 44.31874
satellites =
physical_characteristics = yes
dimensions =
mass =
density =
surface_grav =
escape_velocity =
sidereal_day =
axial_tilt =
pole_ecliptic_lat =
pole_ecliptic_lon =
albedo =
temperatures=
temp_name1 =
mean_temp_1 =
max_temp_1 =
temp_name2 =
max_temp_2 =
spectral_type =
abs_magnitude = 13.8

21731 Zhuruochen (1999 RT142) is a Main-belt Asteroid discovered on September 9, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21731+Zhuruochen JPL Small-Body Database Browser on 21731 Zhuruochen]