argument of perihelion

argument of perihelion

See orbital elements.

argument of perihelion

[′ar·gyə·mənt əv ¦per·ə¦hēl·yən]
(astronomy)
References in periodicals archive ?
The argument of perihelion is an angle that defines the orientation of an orbit's perihelion with respect to the ecliptic plane (see figure, page 19), somewhat like a latitude angle on Earth defines an orientation with respect to the equator.
While there was tolerably good agreement in orbital eccentricity, argument of perihelion and nodal longitude, it is difficult to reconcile the perihelion distance and inclination with the 3D/Biela values.
113] as well as 10 extreme Kuiper Belt objects near the outer edge of the Kuiper Belt, Trujillo and I noticed a similarity: a similar argument of perihelion for all 12 objects.
Perhaps the most significant is called the argument of perihelion.