I guess your 1000ls range is for the ADS? what if what you're searching for is not an "astronomical object" but a ship-like contact limited to the detection range of your ships' sensors?
In any case I suspect such a search will get you nowhere- apparently the UA points directly to the Merope star, even when dropped within the Merope system, so the UA behaviour must be related to the star itself not something that may (or may not) be in the system off the ecliptic.
Or have I lost the plot & forgotten what the question was? The Dawn Chorus was early this morning! zzzzzz
I have disputed the "Merope Star is the important thing" concept so many times, I really should have a clip of it saved:
Any device designed to send to other stars and transmit its data back to anywhere in Merope, be it deep space, planet side, underneath a barnacle, will be "programmed" to point at the Merope System, ie the Star. That is more than accurate enough for any signal to be picked up anywhere in system, indeed at light year distances, with wibbly wobbly timey-wimey, you probably would not be able to calculate or detect the exact whereabouts of the receiver. When you bring one of these inter-stellar devices back to the Merope System, the fact that it now points at the star so does not transmit to the correct place is irrelevant, that is not its purpose. (and it would make it too easy!)
As an example. Deep Space probes from Earth are programmed to point back at the Planet, not at the actual receiving station. If you were to park one in your garden, you might expect it to point straight down, but you would be pushing your luck to expect it to point at the receiving station.