Near-Earth object class

Aten asteroids

Earth-crossing NEOs with a semi-major axis smaller than Earth's (a < 1 AU) and aphelion beyond Earth's perihelion (Q > 0.983 AU).

Near-Earth object class

Overview

Near-Earth asteroids with orbits mostly inside Earth's but reaching out to cross it, named after 2062 Aten.

1 modelled member.

99942 ApophisPHA
A near-Earth asteroid famous for its very close but non-impacting approach to Earth on 13 April 2029; impacts for the foreseeable future have been ruled out by radar and tracking.
CategoryNear-EarthTypeSilicaceous (S)Discovered2004

Facts on this topic will be cited from these primary and reference sources.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
NASA JPLJet Propulsion Laboratory / Solar System Dynamics
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.

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