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Aerospace Engineering
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Orbital Mechanics
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Perturbing Function (Disturbing Function)
Perturbing Function (Disturbing Function)
The scalar function
R
R
R
(or
V
V
V
) derived from the perturbing acceleration
F
⃗
p
e
r
t
\vec{F}_{pert}
F
p
er
t
. It is typically expressed in terms of the orbital elements and determines the rate of change of the orbital elements.