Please consider the outer diameter of the ring, if any, when deciding whether to render an object.
This would make it possible to define ring systems around stars by defining a fake planet (inside the star) with an extensive ring system.
Of course, one could also create such a ring system by defining a gazillion asteroids with varying albedos, but that'd be a bit much
![Smile :)](./images/smilies/icon_smile.gif)
Alternatively, being able to directly define rings around stars would be good, too.