The Wikipedia article on apparent retrograde motion seems to have a table containing exactly what you are looking for:
The apparent motion is observed when the projection of a planet is compared to the star background. There are no real change in the planetary orbits, but when for example the Earth catches up with Mars, it seems to move retrograde relative to the background because of our own change of view. (Like how it appears that you are scrolling further down on this page when the background moves upwards.)
No comments:
Post a Comment