celeries.perham.PerHam

class celeries.perham.PerHam(degree, km_max, spatial=True)

Perturbative part of the 3 body Hamiltonian using the general method described in Laskar & Robutel (1995) and the Robutel & Pousse (2013) method for the coorbital case.

This implementation was inspired by the TRIP macros fperpla.t (J. Laskar) - 15/03/2011.

Parameters:

degreeint

Degree of the development.

km_maxint

Maximum value of \(|k_1|+|k_2|\) that will be required when computing direct terms \(k_1 \lambda_1 + k_2 \lambda_2\) by calling the direct() method (this is used for Laplace coefficients recurrence relations). Set km_max=-1 to avoid using recurrence relations.

spatialbool

Whether to consider the 3D or the co-planar only case.

Methods

coorbital_direct()	Direct part of the coorbital Hamiltonian using the method of Robutel & Pousse (2013).
coorbital_indirect()	Indirect part of the coorbital Hamiltonian using the method of Robutel & Pousse (2013).
direct(k)	Direct part of the Hamiltonian with coefficients k for the mean longitudes, using the method of Laskar & Robutel (1995).
indirect(k)	Indirect part of the Hamiltonian with coefficients k for the mean longitudes, using the method of Laskar & Robutel (1995).