There are many ways to classify planets.

1
There are many ways to classify planets. Here
are 3 common examples.
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Inner and Outer Planets
Mercury Venus Earth Mars Jupiter Saturn Uranus
Neptune Pluto
Inner Planets
Asteroid Belt
Divides the Inner and Outer Planets
Outer Planets
3
The planets inside the asteroid belt are termed
the Inner Planets Mercury, Venus, Earth, and Mars.
The planets Outside the asteroid belt are termed
the Outer Planets Jupiter, Saturn, Uranus, Neptune
4
Inferior and Superior Planets
Mercury Venus Earth Mars Jupiter Saturn Uranus
Neptune Pluto
Inferior Planets
Earth
Superior Planets
5
The planets inside the orbit of the earth are
called the Inferior Planets Mercury and Venus.
The planets outside the orbit of the earth are
called the Superior Planets Mars, Jupiter,
Saturn, Uranus, Neptune, and Pluto.
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Mercury Venus Earth Mars Jupiter Saturn Uranus N
eptune Pluto
Terrestrial Planets
Gas Planets
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The planets that have solid surfaces,are termed
the Terrestrial Planets Mercury, Venus, Earth,
Mars.
The planets sharing the gaseous structure of
Jupiter are termed the Gas Planets Jupiter,
Saturn, Uranus, and Neptune.