What is Longitude of the ascending node?
[[Image:Orbit.svg|thumb|right|350px|The longitude of the [[ascending node]], for a [[heliocentric orbit]].]] The '''longitude of the ascending node''' (☊ or Ω) is one of the [[orbital elements]] used to specify the [[orbit]] of an object in space. It is the angle from a reference direction, called the ''[[origin of longitude]]'', to the direction of the [[ascending node]], measured in a [[reference plane]].<ref>[http://www.lns.cornell.edu/~seb/celestia/orbital-parameters.html Parameters Describing Elliptical Orbits], web page, accessed [[May 17]], [[2007]].</ref> ==References== {{reflist}} {{Sci-stub}} [[Category:Orbits]]