PyMeeus: PyMeeus (Library of astronomical algorithms in Python) PyMeeus: PyMeeus: PyMeeus is a Python implementation of the astronomical algorithms PyMeeus: described in the classical book 'Astronomical Algorithms, 2nd Edition PyMeeus: Willmann-Bell Inc. (1998)' by Jean Meeus. PyMeeus: PyMeeus: PyMeeus: PyMeeus: PyMeeus: PyMeeus: