- 2209 Tianjin
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Tianjin
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =
discovery_site =
discovered =
designations = yes
mp_name = 2209
alt_names = 1978 US1
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 3.0360645
perihelion = 2.6574349
semimajor =
eccentricity = 0.0665021
period = 1754.3746795
avg_speed =
inclination = 2.61098
asc_node = 151.01481
mean_anomaly = 37.39042
arg_peri = 264.52934
satellites =
physical_characteristics = yes
dimensions =
mass =
density =
surface_grav =
escape_velocity =
sidereal_day =
axial_tilt =
pole_ecliptic_lat =
pole_ecliptic_lon =
albedo = 0.2854
temperatures=
temp_name1 =
mean_temp_1 =
max_temp_1 =
temp_name2 =
max_temp_2 =
spectral_type =
abs_magnitude = 10.902209 Tianjin (1978 US1) is a
Main-belt Asteroid discovered inOct. 28 ,1978 at thePurple Mountain Observatory .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2209+Tianjin JPL Small-Body Database Browser on 2209 Tianjin]
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