fdbad8a252
I'm not going to use type annotations in function signatures because they are causing more problems than they are worth. The last straw was that different versions of Python don't generate the same text representation. This broke my Travis CI tests.
BodyCode(name)
Finds the Body enumeration value, given the name of a body.
name: str The common English name of a supported celestial body.
Body
If name is a valid body name, returns the enumeration
value associated with that body.
Otherwise, returns Body.Invalid.
>>> astronomy.BodyCode('Mars') <Body.Mars: 3>
GeoMoon(time)
Calculates the geocentric position of the Moon at a given time.
Given a time of observation, calculates the Moon's position as a vector. The vector gives the location of the Moon's center relative to the Earth's center with x-, y-, and z-components measured in astronomical units.
This algorithm is based on Nautical Almanac Office's Improved Lunar Ephemeris of 1954, which in turn derives from E. W. Brown's lunar theories from the early twentieth century. It is adapted from Turbo Pascal code from the book Astronomy on the Personal Computer by Montenbruck and Pfleger.
time : Time The date and time for which to calculate the Moon's position.
Vector The Moon's position as a vector in J2000 Cartesian equatorial coordinates.
unique(enumeration)
Class decorator for enumerations ensuring unique member values.