That's not a Coriolis, most likely is the bug with construction building remaining even after the asteroid base was done.
Now, if he was to place another orbital building, like a Medical Installation or a Space Farm on that slot next to the Star, the asset will appear in the asteroid field as well (known bug), and that could influence the Asteroid Base to get mixed High Tech or Agriculture economy. Maybe. But, obviously, 0 chance to get Steel out of it.
Now, if he was to place another orbital building, like a Medical Installation or a Space Farm on that slot next to the Star, the asset will appear in the asteroid field as well (known bug), and that could influence the Asteroid Base to get mixed High Tech or Agriculture economy. Maybe. But, obviously, 0 chance to get Steel out of it.