Characteristics of planets

Answer 1

The IAU came up in 2006 with three definitions for a planet: # It must orbit the Sun. # It must be large enough for gravity to mould it into a nearly spherical shape. # It must have cleared the neighbourhood around its orbit. The third definition excluded Pluto as a planet.

Answer 2

Per the new 2006 International Astronomical Union definition of a true planet, they must be in hydrostatic equilibrium (i.e., have enough gravity to end up with a fairly rounded, spheroidal shape, although most planets are slightly oblate because of rotation); they must be in orbit around the Sun (and not, for example, another planet - e.g., Jupiter and Saturn have moons larger than the planet Mercury, but they remain designated as moons, not planets); and they must have cleared a significant fraction of their orbits.. which, for example, Pluto has not and thus was demoted from planet to minor or dwarf planet.

Answer 3

The mass of the planet is all you need to know.

That, along with the mass of the other object and the distance between

their centers, tells you the strength of the force between them.

Answer 4

Planets are celestial bodies that orbit a star, have enough mass to form a nearly spherical shape, and have cleared their orbit of other debris. They are not self-luminous but reflect light from their host star. Planets can be classified as terrestrial (like Earth) or gas giants (like Jupiter).

Answer 5

Its mass. The greater the mass the stronger the gravitational force.

Answer 6

Jupiter:stripes,Neptune:white,Earth:blue, green, white, and brown.

Answer 7

The total mass of the planet,

and the radius (or diameter) of the planet.

Note, the smaller the planet, the greater the force of gravity.

Answer 8

mass of the planet and its distance from other objects

Answer 9

The distance from the planet to earth