@ Lngjohnsilver1: The requirement is that there must be a class Y dwarf star in the system, not that it has to be the main star.
That said, was there?
Don't forget that the Codex is seriously bugged still, so finds might not register, listed requirements might be incorrect, and so on.
I'm sure there's quite a few "traits", but so far only Biologicals in Orbit (Space) ever exhibited any for all I know.
Plus... *ehm*... What's the point?
All you get for discovering new "traits" is a lousy 2500Cr, a bugged placeholder String HUD Message (lol) and the additional line in the Codex (not even your name attached to it).
I've discovered a few but nothing ever came of it.
Well, exactly. It's nice if Frontier meant you could poke at them, but what for? The known rewards for doing so are peanuts, and while there
might be undiscovered interactions (I wouldn't be surprised if there weren't, and Frontier just thought we didn't try everything simply because the tries didn't register on their end), none of what has been found so far has led to anything. All the obvious and less-obvious stuff has been tried, so there might be obscure things Frontier thought we'd do but we didn't - but if you try a plethora of interactions, and nothing happens on any of them, then that should be little wonder.
A good example of how they could have done things right were the Thargoid Probes. Those exhibit logical, consistent behaviour, things which needed to be analyzed, and also found plenty of useful extra in-game use when the Thargoid surface structures were introduced. Oh, and they could also be used in UA bombing as well, if memory serves.
I hope that someday, we'll see hand-crafted galaxy content that at least approaches that of the Thargoid content, or at least the newer Guardian stuff's.