We successfully added three asteroids in WWT by right clicking the sun in the layer menu and "add minor planet" as reference frame by name.
These asteroids are now visible in solar system view and nicely rotate around the sun.
However, the objects can not be found when using the search "sky" view. They are not in the lower context menu. And will not be found in search.
Is there any trick to see the asteroids in sky view as if you were looking through a telescope ?