I'm only three months into my extended Tutorial game, and my two gravitational survey ships are exploring the jump points out beyond the orbit of Saturn. They've each explored two possible jump points and found nothing, and each are at their third point. After I click my last 5-day update, I get a message that says "New Jump Point found in the Sol System" and I see a JP 1: Unex dot show up just beyond the orbit of Jupiter. My question is, is this a random event that spawned a new jump point not associated with any of the possible jump point locations, or is this associated with one of my gravitational survey ships? I looked at their History/Notes/Tech Data tab on the Individual Unit Details screen, and don't see anything about either one finding a jump point.
Your ships have each
surveyed two of the thirty
survey locations in the system, and are now on their third. At this point, one of them has found an actual Jump Point. There are no random events that 'spawn new jump points' - the closest thing is someone coming through a closed JP from the other side (which you won't actually notice unless you have a sensor close enough to see them do it).
'Possible Jump point locations' includes anywhere in the entire system out to a distance determined by the square root of the mass of the system primary - in other words, well beyond Pluto for the Solar System.