This is the first 3D Sun that you can found for Orbiter. you will find two new halo textures with it. (a white one and a yellow one wich is in the screenshot)
It does not require any add-ons, if you have already downloaded a Sun texture, it will not probably work.Read the ReadmeImportant file, you have to add the star in your Sol.cfg file. (to avoid some bugs with anyother download planets)
Now for Orbiter 2010 P1 !