- 20831 Zhangyi
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Zhangyi
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site =Socorro
discovered =October 24 ,2000
designations = yes
mp_name = 20831
alt_names = 2000 UM47
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 2.3815115
perihelion = 2.1229955
semimajor =
eccentricity = 0.0573905
period = 1234.5944899
avg_speed =
inclination = 2.06991
asc_node = 355.84854
mean_anomaly = 178.23236
arg_peri = 311.98636
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 = 15.520831 Zhangyi (2000 UM47) is a
Main-belt Asteroid discovered onOctober 24 ,2000 by theLincoln Laboratory Near-Earth Asteroid Research Team atSocorro .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=20831+Zhangyi JPL Small-Body Database Browser on 20831 Zhangyi]
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