出典:Wiktionary
出典:『Wiktionary』 (2025/03/05 23:32 UTC 版)
true anomaly (countable and uncountable, plural true anomalies)
出典:Wikipedia
出典:『Wikipedia』 (2011/05/03 15:48 UTC 版)
In celestial mechanics, the true anomaly is an angular parameter that defines the position of a body moving along a Keplerian orbit. It is the angle between the direction of periapsis and the current position of the body, as seen from the main focus of the ellipse (the point around which the object orbits).