Simple orbit propagation in Python
I wrote this (very quickly) in support of estpy. It's not intended to be used by people who actually want a propagator. Folks who want a real propagator can have a look at poliastro. The python propagators I've seen seem to focus on sun-centered systems, like inter-planetary missions. Consequently, they don't seem to focus on Earth-centric propagation, in which the effects of the Sun and Moon's gravity, and the non-spherical mass distribution of the Earth are important. If anyone can point me to a propagator that can take into account the non-spherical Earth, Sun/Moon effects, drag, light radiation, etc., let me know!