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Apohele asteroid

Apohele asteroids, or alternatively Interior-Earth Objects (IEOs) or Atira asteroids, are a subclass of Aten asteroids. They have not only their perihelion within Earth's orbit, but also their aphelion; that is, their entire orbit is within Earth's (which has a perihelion of 0.983 AU).The first suspected Apohele was 1998 DK36, the first confirmed Apohele was (163693) Atira in 2003. As of March 2010, there are 10 suspected Apoheles, of which seven have been observed in multiple oppositions, and the orbits of two have been determined with sufficient precision to receive a permanent number (see list below); 28 more objects have aphelia shorter than the Earth's aphelion (1.017 AU). The Near Earth Object Surveillance Satellite is intended to find more. In great part because of the search methods used to look for asteroids, there are currently no known asteroids with orbits contained within Venus or Mercury's (e.g., Vulcanoids).There is no standard name for the class. The name Apohele was proposed by the discoverers of 1998 DK36, and is the Hawaiian word for orbit; it was chosen partially because of its similarity to the words aphelion (apoapsis) and helios. Other authors adopted the designation Inner Earth Objects (IEOs). Still others, following the general practice to name a new class of asteroids for the first recognized member of that class, use the designation Atira asteroids. Cite error: There are tags on this page, but the references will not show without a {{Reflist}} template or a tag; see the help page.
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