noun
longitude of the ascending node
Technical term in astronomy; refers to the ecliptic longitude at which an orbit crosses the reference plane from south to north.
人工衛星の軌道要素として、昇交点黄経が用いられる。
The longitude of the ascending node is used as an orbital element for artificial satellites.
Compound of 昇交点 (ascending node) and 黄経 (ecliptic longitude). The exact historical derivation is uncertain; the term is a modern technical coinage.