You should give this thread a read: we are debating about it a lot lately: T6, T7 and T9 NEVER produce the Drawing in the UA morse, the UA spells the System's name. Unless the UA is jettisoned from another non-T ship.
You cannot find the system because the UA spells only alphanumerical characters, not dashes.
EDIT:
Sorry, my mistake, the System is HYADES SECTOR D5Y D39
So, sorry if this test has been proposed or tried since the new T# behavior, but can we try to use this to see if the UA can find an invisible object?