Delaunay variables

E621101

Delaunay variables are a set of canonical action-angle variables used in celestial mechanics to simplify the analysis of orbital motion and perturbations.

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Statements (45)

Predicate Object
instanceOf action–angle variables
canonical variables
set of orbital elements
appliesTo restricted three-body problem
two-body problem
assumes central gravitational potential
basedOn Keplerian orbital elements NERFINISHED
correspondsToOrbitalElement argument of periapsis
longitude of ascending node
mean anomaly
correspondsToOrbitalElement eccentricity
inclination
semi-major axis
definedIn phase space of orbital elements
enables averaging over fast angles
separation of fast and slow orbital variables
field astrodynamics
dynamical astronomy
hasActionVariable D
G
H
hasAngleVariable g
h
hasComponent D
G
H
g
h
introducedBy Charles-Eugène Delaunay NERFINISHED
isCanonicalWithRespectTo standard symplectic form
isGeneralizationOf Keplerian elements in Hamiltonian form
relatedTo Poincaré variables NERFINISHED
canonical transformations in mechanics
usedFor analysis of orbital motion
analytical theory of planetary motion
lunar theory
perturbation theory in celestial mechanics
satellite orbit perturbation analysis
simplification of Hamiltonian formulation of orbital dynamics
usedIn Hamiltonian perturbation theory
Lagrange planetary equations NERFINISHED
celestial mechanics
study of long-term orbital evolution

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Lagrange’s planetary equations relatedTo Delaunay variables