21558 Alisonliu

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


caption =
discovery = yes
discovery_ref =
discoverer = Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site = Socorro
discovered = August 24, 1998
designations = yes
mp_name = 21558
alt_names = 1998 QW77
mp_category =
orbit_ref =
epoch = May 14, 2008
aphelion = 3.1127293
perihelion = 2.2353855
semimajor =
eccentricity = 0.1640473
period = 1597.1824282
avg_speed =
inclination = 11.94232
asc_node = 323.84629
mean_anomaly = 165.27799
arg_peri = 286.54430
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 = 12.0

21558 Alisonliu (1998 QW77) is a Main-belt Asteroid discovered on August 24, 1998 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21558+Alisonliu JPL Small-Body Database Browser on 21558 Alisonliu]