Hi everybody, I'm planning a 2016 mission to the moon similar to Apollo 8 (Orbital mechanics homework). I decided to start from a equatorial parking orbit, and then to perform a plane change. The problem is that I obviously need to know the position of the moon's orbit plane, which, as you know, changes in time. Where can I find the nodes line position in 2016? Also, the teacher asked us to choose the 2016 day in which the propellant requirement for the mission is the less. How should I proceed?