Orbital elements
type: Concept
narrower: Argument of perihelion

Argument of perihelion
type: Concept
contributor: AAS Frey.Katie
modified: 2020-11-03T18:19:30.524Z
modified: 2020-11-03T18:19:14.364Z
broader: Orbital elements
definition: The angular distance between the ascending node of an object orbiting the Sun and its perihelion. Argument of perihelion is measured in the orbital plane with respect to the Sun and in the direction of motion. It is one of the orbital elements and usually shown with the symbol ω.