When you go to an unknown system, the star is the 1 undiscovered object that pops up - then as a matter of course, I fire off my discovery scanner, and sometimes get x more undiscovered objects. If I don't bother to visit these, to target them and identify them - do they provide any cash benefit when you sell the info? I'm assuming not, so as a supplementary question - is the quality of the scanner array the thing to upgrade if you want to identify these undiscovered objects from further away?