¥Pluto
is very small as planets go, only 0.002 Earth masses.
¥PlutoÕs
orbit is elliptical : it varies from 29 to 49 A.U. from the Sun,
crossing inside of Neptune's orbit.
¥Pluto's
orbit is inclined 17deg to the ecliptic, so it goes farther above and
below the plane in which the other planets formed than any other planet.
