elliptic
library
Functions
-
length1(double a, double e)
→ double
-
Approximate length of an elliptic orbit (Ramanujan, first approximation).
-
length2(double a, double e)
→ double
-
Approximate length of an elliptic orbit (Ramanujan, second approximation).
-
length4(double a, double e)
→ double
-
Length of an elliptic orbit by numerical integration (4-point).
-
position(Planet planet, Planet earth, double jde)
→ ({double dec, double ra})
-
Observed equatorial coordinates of a planet.
-
vAphelion(double a, double e)
→ double
-
Velocity at aphelion for eccentricity
e and semimajor axis a.
-
velocity(double a, double r)
→ double
-
Velocity of a body at distance
r in an orbit with semimajor axis a.
-
vPerihelion(double a, double e)
→ double
-
Velocity at perihelion for eccentricity
e and semimajor axis a.
