Is Sedna a Kuiper Belt Object or an Oort Cloud Object? I was under the impression it orbited within the Oort Cloud, but several people have told me that is incorrect, that Sedna is a Kuiper Belt Object.
Also, is the Oort Cloud located before or after the heliopause? My understanding is that the heliopause is the area where the sun's gravity stops having any effect on any objects, aka, the end of our solar system. But recently, I've seen a visual depiction of the solar system that shows the Oort Cloud out past the heliopause. How is this possible? Isn't the Oort Cloud still within the sun's sphere of influence? It's the source of long period comets, which appears to mean there has to be some gravitational influence from the sun pushing these comets further into the solar system. If the Oort Cloud were beyond the heliopause, how could there be any attraction of its comets toward the sun?