premise: A near-Earth object is one whose orbit brings it into proximity with Earth.
hypothesis: The Aten asteroids are a group of asteroids , whose orbit brings them into proximity with Earth . Aten asteroids are defined by having a semi-major axis of less than one astronomical unit ( AU ) , the ( roughly ) average distance from the Earth to the Sun . A near-Earth object ( NEO ) is any small Solar System body whose orbit brings it into proximity with Earth .