Argument of Perigee, `omega`

`omega = cos^-1((n*e) / (||n||*||e||))`

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The Argument of Perigee calculator computes the argument of perigee (Argument of Periapsis - ω) based on the Nodal Vector (n) and Eccentricity Vector (e).

INSTRUCTIONS: Enter the following: /attachments/0fb6b3d8-e4b5-11e3-b7aa-bc764e2038f2/Orbital Parameters.png

(n) Nodal Vector
(v) Eccentricity Vector

Argument of Perigee (ω): The calculator returns the argument of perigee in degrees. However this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The Argument of Perigee is the angle measured from the Ascending Node to the periapsis, (perigee point), along the satellite's direction of travel.