Function lupnt::EquinoxEquation

Function Documentation

Real lupnt::EquinoxEquation(Real mjd_tt)

Computation of the equation of the equinoxes.

Note

The equation of the equinoxes dpsi*cos(eps) is the right ascension of the mean equinox referred to the true equator and equinox and is equal to the difference between apparent and mean sidereal time. O. Montenbruck and G. Eberhard, Satellite orbits: models, methods, and applications. Berlin : New York: Springer, 2000. doi: 10.1007/978-3-642-58351-3.

Parameters:

mjd_tt – Terrestrial Time (Modified Julian Date)

Returns:

Equation of the equinoxes