Question

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a planet.

Answer 1

From best of knowledge:
To be a planet , the planet itself have revolving around sun with his own orbit & satellite revolving around the planet. Assume the planet is kept in water it goes dip into it doesn't float like ball.i.e the planet must have density greater than 1.