As to whether there is a source (current or upcoming) placing it in Uroac Sector other than a simple wiki-editor's choice, I do not know. I originally left the articles on stars with otherwise non-specified locations specifically undefined as regards Charted Space location so that GMs could make their own choices regarding the issue for their own campaigns.

* Measuring counterclockwise from coreward bearing
** Slight down-angle into the plane of the page (note that Sol is about ~6.0 pc north of the mean galactic plane)
The text originally said "rim-spinward", but the bearing should push it into rim-trailing. That was why the change was made.