21677 Tylerlyon

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


caption =
discovery = yes
discovery_ref =
discoverer = Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site = Socorro
discovered = September 7, 1999
designations = yes
mp_name = 21677
alt_names = 1999 RO23
mp_category =
orbit_ref =
epoch = May 14, 2008
aphelion = 2.8733259
perihelion = 2.1655851
semimajor =
eccentricity = 0.1404551
period = 1460.6913947
avg_speed =
inclination = 3.62163
asc_node = 131.19916
mean_anomaly = 355.39709
arg_peri = 306.03813
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 = 15.3

21677 Tylerlyon (1999 RO23) is a Main-belt Asteroid discovered on September 7, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21677+Tylerlyon JPL Small-Body Database Browser on 21677 Tylerlyon]