21629 Siperstein

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


caption =
discovery = yes
discovery_ref =
discoverer = Lincoln Laboratory Near-Earth Asteroid Research Team
discovery_site = Socorro
discovered = July 13, 1999
designations = yes
mp_name = 21629
alt_names = 1999 NT8
mp_category =
orbit_ref =
epoch = May 14, 2008
aphelion = 2.2583304
perihelion = 2.1259990
semimajor =
eccentricity = 0.0301828
period = 1185.5181450
avg_speed =
inclination = 1.20399
asc_node = 180.08841
mean_anomaly = 341.98592
arg_peri = 42.07401
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 = 15.9

21629 Siperstein (1999 NT8) is a Main-belt Asteroid discovered on July 13, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21629+Siperstein JPL Small-Body Database Browser on 21629 Siperstein]