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Encyclopedia > Apohele asteroid

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. The Aten asteroids are a group of near-Earth asteroids, named after the first of the group to be discovered (2062 Aten, discovered January 7, 1976 by Eleanor F. Helin). ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... The astronomical unit (AU or au or a. ... Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third planet outward from the Sun. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ...


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] 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). 2004 is a leap year starting on Thursday of the Gregorian calendar. ... Discovered February 11, 2003, by the Lincoln Near-Earth Asteroid Research projects station at Socorro, New Mexico, 2003 CP20 (also written 2003 CP20), was the first asteroid known to have an orbit entirely within that of Earth. ... 2004 JG6 (also written 2004 JG6) is an unusual asteroid. ... 1998 DK36 (also written 1998 DK36) is possibly the first Apohele asteroid (asteroid that is always closer to the Sun than Earth) detected. ... February 24 is the 55th day of the year in the Gregorian Calendar. ... 1998 is a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ... David J. Tholen is an American astronomer. ... (*min temperature refers to cloud tops only) Atmospheric characteristics Atmospheric pressure 9. ... Atmospheric characteristics Atmospheric pressure trace Potassium 31. ... Vulcanoids are hypothetical asteroids that may orbit in a dynamically stable zone between 0. ...


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. The Aten asteroids are a group of near-Earth asteroids, named after the first of the group to be discovered (2062 Aten, discovered January 7, 1976 by Eleanor F. Helin). ... 2062 Aten is an asteroid that was discovered at the Palomar Mountain Observatory by Eleanor F. Helin, who is now the principal scientist for the NEAT (Near-Earth Asteroid Tracking) project. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle (R) Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... In physics, an orbit is the path that an object makes, around another object, whilst under the influence of a source of centripetal force, such as gravity. ...


Related topics


Minor planet is the official term for asteroids and trans-Neptunian objects. ...


  Results from FactBites:
 
ASTEROID, (1418 words)
The first asteroid found to have a moon was the main-belt asteroid Ida, whose satellite, given the name Dactyl, was discovered by the U.S. Jupiter-bound space probe Galileo in 1993.
Asteroids that cross the orbit of Mars or whose orbit lies entirely within that of Mars are called near-earth asteroids.
The Aten asteroids, of which a couple of hundred are known, also may cross earth's orbit, but they do so near their furthest point from the sun (aphelion); the few whose orbit lies entirely within earth's are called Apohele asteroids.
  More results at FactBites »

 

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