A dwarf planet is a planetary-mass object that is neither a planet nor a natural ... five known objects in the solar system which fit the IAU definition of dwarf planet, ...
a spherical celestial body revolving about the sun, similar to a
Aug 17, 2015
Thus the Planet
a celestial body that orbits the sun and has a spherical shape but is not large enough to disturb other objects from its orbit. ADVERTISEMENT ...
A celestial body that orbits the sun and is massive enough to assume a nearly spherical shape, but that does not clear other bodies from the neighborhood ...
Jan 1, 2009
Currently none of the dwarf planets have been visited by space probes, though in
2015 ... The International Astronomical Union's