- 12722 Petrarca
Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
apsis =
name = Petrarca
symbol =
caption =
discovery = yes
discovery_ref =
discoverer =E. W. Elst
discovery_site =European Southern Observatory
discovered =August 10 ,1991
designations = yes
mp_name = 12722
alt_names = 1991 PT1
mp_category =
orbit_ref =
epoch =May 14 ,2008
aphelion = 2.6474369
perihelion = 1.9714765
semimajor =
eccentricity = 0.1463462
period = 1281.9266503
avg_speed =
inclination = 3.34133
asc_node = 191.34200
mean_anomaly = 351.10149
arg_peri = 38.66492
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 = 14.612722 Petrarca (1991 PT1) is a
Main-belt Asteroid discovered onAugust 10 ,1991 byE. W. Elst at theEuropean Southern Observatory .External links
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=12722+Petrarca JPL Small-Body Database Browser on 12722 Petrarca]
Wikimedia Foundation. 2010.
