- 21621 Sherman
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Sherman
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site =Socorro
discovered =May 20 ,1999
designations = yes
mp_name = 21621
alt_names = 1999 KR4
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 3.0177482
perihelion = 1.7734850
semimajor =
eccentricity = 0.2596958
period = 1354.3297074
avg_speed =
inclination = 8.69722
asc_node = 209.45792
mean_anomaly = 131.26305
arg_peri = 114.63589
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 = 14.521621 Sherman (1999 KR4) is a
Main-belt Asteroid discovered onMay 20 ,1999 by theLincoln Laboratory Near-Earth Asteroid Research Team atSocorro .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21621+Sherman JPL Small-Body Database Browser on 21621 Sherman]
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