21531 Billcollin

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


caption =
discovery = yes
discovery_ref =
discoverer = OCA-DLR Asteroid Survey
discovery_site = Caussols
discovered = July 20, 1998
designations = yes
mp_name = 21531
alt_names = 1998 OS
mp_category =
orbit_ref =
epoch = May 14, 2008
aphelion = 2.9597705
perihelion = 2.5596835
semimajor =
eccentricity = 0.0724867
period = 1674.5480511
avg_speed =
inclination = 6.10861
asc_node = 264.78147
mean_anomaly = 221.05285
arg_peri = 224.69674
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 = 14.8

21531 Billcollin (1998 OS) is a Main-belt Asteroid discovered on July 20, 1998 by the OCA-DLR Asteroid Survey at Caussols.

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21531+Billcollin JPL Small-Body Database Browser on 21531 Billcollin]