@spiceErrorCheck<EOL>def recrad(rectan):
rectan = stypes.toDoubleVector(rectan)<EOL>outrange = ctypes.c_double()<EOL>ra = ctypes.c_double()<EOL>dec = ctypes.c_double()<EOL>libspice.recrad_c(rectan, ctypes.byref(outrange), ctypes.byref(ra),<EOL>ctypes.byref(dec))<EOL>return outrange.value, ra.value, dec.value<EOL>
Convert rectangular coordinates to range, right ascension, and declination.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/recrad_c.html

:param rectan: Rectangular coordinates of a point.
:type rectan: 3-Element Array of floats
:return:
        Distance of the point from the origin,
        Right ascension in radians,
        Declination in radians
:rtype: tuple