What 3 things makes a planet a planet?

Answer 1

A planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.[a][1][2] so from that...i would say that a planet needs 1. Must be a celestial body 2. Must orbit a star or stellar remnant 3. Must be massive enough to rounded by its own gravity

Answer 2

According the International Astronomical Union, planets:

-have diameters greater than 2000km and orbit the sun

-possess enough gravity to maintain a stable shape

-dominate their immediate neighborhoods (surrounding space in orbit).

Answer 3

A planet is a celestial body that orbits the sun, is spherical in shape due to its own gravity, and has cleared its orbit of other debris.