die Apsidenlinie
Translation
line of apsides, apsidal line
Examples
Die Apsidenlinie beschreibt die Orientierung der Umlaufbahn.
The line of apsides describes the orientation of the orbit.
Grammar Patterns
die Apsidenlinie describes sth. In astronomy, describes the orientation of an orbit. Die Apsidenlinie beschreibt die Orientierung der Umlaufbahn.
Similar Words
Bahnachse (orbital axis)
Etymology
From Greek 'apsis' (arch, vault) and German 'Linie' (line). It refers to the line connecting the two extreme points of an orbit.
Memory Tips
Think of the 'Linie' (line) that connects the 'Apsiden' (apses or arches) of an orbit. It's a specific astronomical term.