Is the "dragon star" observed by Ishgardian astrologians the same object as the "dragonstar" that is Midgardsormr's home world?

Is it meant to be a planet in the same solar system as Hydaelyn? Or is it from another solar system? Omega talks about passing "stars" on its journey, but that word is used to mean "planets" in the game as well, so I'm not sure what it is supposed to describe.