Look up: perihelion

1. perihelion
   The point in its orbit where a planet is closest to the Sun.
   Found on http://www.solarviews.com/eng/terms.htm
   
   
2. perihelion
   The point in its orbit where a planet is closest to the Sun. when referring to objects orbiting the Earth the term perigee is used; the term periapsis is used for orbits around other bodies. (opposite of aphelion)
   Found on http://skyview.gsfc.nasa.gov/help/dictio
   
   
3. Perihelion
   Periapsis in solar orbit.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
4. perihelion
   [n] - periapsis in solar orbit
   Found on http://www.webdictionary.co.uk/definitio
   
   
5. Perihelion
   the time and point where a planet is closest to the Sun; see also aphelion.
   Found on http://www.isleofavalon.co.uk/Glastonbur
   
   
6. Perihelion
   The position of the Earth (or other planet) in its orbit when it is closest to the Sun.
   Found on http://www.delscope.demon.co.uk/astronom
   
   
7. Perihelion
   When the orbit of a planet takes it to the point closest to the Sun.
   Found on http://www.solarspace.co.uk/Glossary3.ph
   
   
8. Perihelion
   The point in its orbit when an object is closest to the Sun.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
9. Perihelion
   The point of closest approach for any object orbiting the Sun (Helios is Greek for Sun). See also: Aphelion, Perigee, Perihelic Opposition, Sun.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
10. perihelion
    that point in the orbit of a planet at which it is nearest to the sun 99999 INTERNATIONAL DE MONACO,1951 Category: The cosmos
    Found on http://www.mijnwoordenboek.nl/definition
    
    
11. perihelion
    noun periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
12. Perihelion
    • (n.) Alt. of Perihelium
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. perihelion
    (from the article `Earth Perihelion and Aphelion, 2008`) ...the focus is the pericentre, or periapsis, and that farthest from it is the apocentre, or apoapsis. Specific terms can be used for individual ... [7 related articles]
    Found on http://www.britannica.com/eb/a-z/p/44
    
    
14. perihelion
    perihelion (s), perihelia (pl); perihelial 1. The point in the orbit of a planet or comet at which it is nearest to the sun. 2. The point nearest the sun in the orbit of a planet or other celestial body. Related 'around, round, surrounding' units: ambi-; ampho-; circ-; circu...
    Found on http://www.wordinfo.info/words/index/inf
    
    
15. Perihelion
    It is the point in the Earth's orbit when it is closest to the Sun (147.5 million km). Perihelion occurs on the 3rd or 4th of January.
    Found on http://www.physicalgeography.net/physgeo
    
    
16. PERIHELION
    The point of the earth's orbit that is nearest to the sun. Although the position is part of a 21,000 year cycle, currently it occurs around January, when the earth is about 3 million miles closer to the sun than at aphelion. This term can be applied to any other celestial body in orbit around the sun. It is the opposite of aphelion.
    Found on http://www.weather.com/glossary/p.html
    
    
17. perihelion
    perihelion (per"uhē'lēun) , point nearest the sun in the orbit of a body about the sun. See apsis.
    Found on http://www.infoplease.com/ce6/sci/A08383
    
    
18. perihelion
    In astronomy, the point at which an object, travelling in an elliptical orbit around the Sun, is at its closest to the Sun. The point at which it is furthest from the Sun is the aphelion
    Found on http://www.talktalk.co.uk/reference/ency
    
    
19. Perihelion
    The Perihelion occurs when a planet is closest to the Sun during its slightly elliptical orbit.
    Found on http://planet-mars.net/index.php?documen
    
    
20. Perihelion
    The closest point to the Sun in a planetary body's orbit.
    Found on http://www.moonconnection.com/moon-gloss