- 20403 Attenborough
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Attenborough
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =J. Broughton
discovery_site =Reedy Creek Observatory
discovered =July 22 ,1998
designations = yes
mp_name = 20403
alt_names = 1998 OW11
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 3.2460461
perihelion = 2.7153999
semimajor =
eccentricity = 0.0890130
period = 1879.6666641
avg_speed =
inclination = 11.66439
asc_node = 93.48970
mean_anomaly = 212.94728
arg_peri = 326.76544
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 = 14.320403 Attenborough (1998 OW11) is a
Main-belt Asteroid discovered onJuly 22 ,1998 byJ. Broughton atReedy Creek Observatory .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=20403+Attenborough JPL Small-Body Database Browser on 20403 Attenborough]
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