- 20839 Bretharrison
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Bretharrison
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 = 20839
alt_names = 2000 US55
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 2.8657932
perihelion = 2.5360898
semimajor =
eccentricity = 0.0610349
period = 1621.3291251
avg_speed =
inclination = 3.62083
asc_node = 131.34020
mean_anomaly = 329.36735
arg_peri = 199.95316
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 = 14.720839 Bretharrison (2000 US55) 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=20839+Bretharrison JPL Small-Body Database Browser on 20839 Bretharrison]
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