НЛО. Австралия

Further past the Ibis I noticed an orb/ball hovering still in the sky that then started to move from south to north - it occasionally slowed to a stop before starting to move again in a reasonaably straight line. It was traveling very slowly and nothing like the plane I saw a few minutes earlier. I asked my wife to keep watch while I went indoors and got my binoculars and digital camera. I took some photos on full optical and digital zoom that are not particularly clear due to the distance and reflection off the object. Through the binoculars however I could see that the object was a solid ball but could not ascertain the size as I had nothing to compare it to. I would guess it was maybe 1 meter or so in diameter as it was definitely not as big as an aircraft but larger than the Ibis (they have an average wingspan of 110 - 123cm). Eventually the object moved in a large arc to the west before going behind a cloud. The cloud dissipated and the object was gone - I had been watching the whole time and it did not re-appear from the cloud but just vanished. I initially thought it may have been a satellite as I had observed them before but when it changed direction and came to a stand still I ruled that out (though I am no expert on satellites and their movement).