from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The intersection of an orbiting object's orbital plane with the plane of reference
from the GNU version of the Collaborative International Dictionary of English
- n. a straight line joining the two nodes of an orbit.
Sorry, no etymologies found.
Kepler therefore was obliged to recompute the parallax from the original observations, as also the position of the line of nodes and the inclination of the orbit.