- 15904 Halstead
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Halstead
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =T. Stafford
discovery_site =Zeno Observatory
discovered =September 29 ,1997
designations = yes
mp_name = 15904
alt_names = 1997 SD11
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 2.2194529
perihelion = 2.1067759
semimajor =
eccentricity = 0.0260451
period = 1162.0308361
avg_speed =
inclination = 3.04529
asc_node = 242.28182
mean_anomaly = 330.12465
arg_peri = 267.72796
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 = 14.415904 Halstead (1997 SD11) is a
Main-belt Asteroid discovered onSeptember 29 ,1997 byT. Stafford at theZeno Observatory .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=15904+Halstead JPL Small-Body Database Browser on 15904 Halstead]
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