celeries.ellipseries

Functions

aOr(e, eiM[, degree])	Expansion of a/r in power series of the eccentricity.
eiv(e, eiM[, degree])	Expansion of exp(i v) in power series of the eccentricity, where v is the true anomaly.
rOa(e, eiM[, degree])	Expansion of r/a in power series of the eccentricity.