G'day Yowie 88
This is an image similar to what I saw and it's so odd that you mention Emu Plains as this is close to the area
it was flying over
Up until recently I did think it was a drone of some kind due to the disposable characteristics it displayed, although my opinion changed after watching this video https://www.youtube.com/watch?v=qng_-1t07ZI
showing one leaving our atmosphere.
Just for the record, this is what I observed;
I was at a lookout called Moon Rise located near Horsley Park at around 11pm sometime in'99. Myself and a friend were looking west and we noticed a big green object flying from south to north at a fairly slow speed at a fixed altitude for approximately 1.5 minutes. It was an amber ball of light with a pulsating green electronic field around it about the size of a full moon. At first I thought it was a green mist, but the field was the same distance ahead of it as it was behind it. If it was vapor, it would have had a tail and this did not. It had no lights or beacons that you would expect to see on an aircraft.
As it proceeded north and I could watch it more from behind I thought it was falling apart as a red object of around 10% of the Green Fireballs size detached or broke away from below it and starting orbiting around it 3 or 4 times. It's orbit was slightly further away with each revolution and then I lost track of it in some clouds. Then the Green Fireball appeared to break up as it flew into a storm front and it was gone.
What-ever it was, people have been seeing the exact same thing for over 60 years and it's technology has not changed...which is why I think it's not us. If it was imitating a meteor, even to the point of acting as though it was breaking up, you would have to ask why? Maybe it would fool someone a few hundred years ago, but not in modern times.
It would have flown near the RAAF base at Glenbrook all the way over to near the RAAF base at Richmond, which
is similar to reports in the states of being seen around sensitive military installations. For days and weeks after I was waiting for something to be on the news or the internet, but nothing was reported.
It was mind blowing seeing something like that!