# Argument of latitude

In celestial mechanics, the argument of latitude (${\displaystyle u}$) is an angular parameter that defines the position of a body moving along a Kepler orbit. It is the angle between the ascending node and the body.
${\displaystyle u=\nu +\omega }$
where ${\displaystyle u}$ is the argument of latitude, ${\displaystyle \nu }$ the true anomaly, and ${\displaystyle \omega }$ the argument of periapsis.