$dotomega_"Sun" = 0.00077 * (sin^2( "i" )) / "n"$

Enter a value for all fields

This equation computes the rate of change of the argument of perigee, ( $dotomega$ ) of an orbit where the rate of change in deg/day results from the Sun's third-body gravitational influence on the orbit. The inputs to this equation are the orbit inclination (i) and the number of orbit revolutions per day (n).

/attachments/450f9991-ed23-11e3-b7aa-bc764e2038f2/SunPerturbationargumentofperigee-illustration.png

Notes

This computation is an approximation, as it neglects the perturbation caused by the change in orientation of the orbital plane relative to the Sun's ecliptic plane.