Apohele asteroid

From Academic Kids

Apohele asteroids are a subclass of Aten asteroids. They have not only their perihelion at less than one AU (within Earth's orbit), but also their aphelion; that is, their entire orbit is within Earth's.

As of July 2004 there are only two confirmed Apoheles: 2003 CP20 and 2004 JG6. An earlier object, 1998 DK36, has not been seen since February 24 1998 and its discoverer David J. Tholen acknowledges that it is currently lost. [1] (http://www.astro.uu.se/IAU/c20/scipre.html) These three asteroids have aphelia in the 0.980-0.973 AU range. 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).

The name Apohele is still under a bit of debate, since most asteroid subclasses are named for prominent members of that group (for example, Aten asteroids are named for 2062 Aten, the first such asteroid discovered), whereas there is no asteroid named "Apohele". Apohele is the Hawaiian word for orbit.

Related topics


The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)
zh:地內小行星
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