Sorry, bum steer. Forget to check where you were - Brisbane, a lot further north than Melbourne.
Voyager 2 "might" have been viewable at about 7º above the horizon. Searched through both Starry Night and Stellarium without success, although I did note one satellite to the S.E., but it was rising.
Sorry Rob, your Xmas star will have to remain anonymous.
Back to sleep.
Robert
P.S. Cheers Ron.
