Sort the sentences based on whether the attributes they describe belong to planets or an object that isn't a planet.
the object orbits the
the object is a satellite
sun
the regions surrounding
the object are free from
debris
the object is triangular
in shape.
planet
not a planet
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Planet: The object orbits the sun

Not planet: The object is a satellite

Planet: The regions surrounding the object are free from debris

Not Planet: The object is triangular in shape.

Explanation:

A planet is characterized as:

Spheroidal (or at least big enough to be round-ish)

It should orbit the sun (not other planets, so satellites like the moon is not considered as a planet)

It should have no debris, or cleared of debris around its orbit

Although there is now the dwarf planet category, it satisfies almost all charateristics to be considered a planet, except the cleared of debris part.