B Largest Moon With A Concave Orbit

AI Thread Summary
The discussion centers on the concept of concave orbits, specifically regarding Earth's Moon and its motion relative to the Sun, which is not concave. It raises questions about whether Pluto and its moon Charon exhibit concave orbits at certain times. Ganymede, the largest moon in the Solar System, is noted for having a "looped" heliocentric path, similar to Charon. The inquiry also seeks to identify the largest body in the solar system that occasionally has a concave orbit with respect to the Sun. The conversation highlights the complexities of orbital dynamics in celestial bodies.
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TL;DR Summary
Asimov pointed out that Earth's Moon is nowhere concave (looped) in its motion with regard to the Sun.
Asimov pointed out that Earth's Moon is nowhere concave (looped) in its motion with regard to the Sun.
What about Pluto and Charon - are both concave w.r.t. the Sun at certain times? Moreover, what is the largest body in the solar system which is sometimes concave w.r.t. The Sun? Thank you.

https://en.wikipedia.org/wiki/Orbit_of_the_Moon#Path_of_Earth_and_Moon_around_Sun
 
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The largest moon in the Solar system is Ganymede, and it has a "looped" heliocentric path.
Charon also has such a path.
 
Thank you - I was also wondering of Pluto itself has such a path.
 

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