Of course it is impossible to make a positive determination from this distance, and if you leave here and go searching for the source of the signature, which could just be a sensor glitch, you may not be able to find the exact spot the wormhole will appear again. If it does appear again... Maybe it would be better to wait here or go explore the Delta quadrant by yourself. How long are you going to wait? I would try a different option if I were you.....