Thanks for filling in the blank spots. I was quite confident about those four spots but didn't see anything that would help me pin down the other shots and so had to leave them out.Your trace of my locations is 90% correct! However, the bulk of my first shots were taken at the RED "X" in image attached. The trees in my shots are the trees by the X.
Here's my guess for where the object was. #1 is the park where I started. #2 is the intersection where I ended up and noticed the object moving north until it disappeared. Based on my eyeball guess, the highlighted red area is where I think the object was located.
That little pin up there is 500 metres above ground, halfway between Beacon Hill Way and the southern edge of the area you indicated. The shaded track is the 737 path across the sky.