Longitude of the ascending node
one of the orbital elements used to specify the orbit of an object in space
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.
- ↑ Parameters Describing Elliptical Orbits, web page, accessed May 17, 2007.