At about 4:15am NSW time I noticed a small bright circle in the sky and took a number of photos over the next 3/4 hour as it moved across the sky and expanded. I'm guessing it is the Themis mission rocket burn to change the orbit and or release the 5 satellites. However the rocket exhaust plume is much larger than any I have seen before, and there is a swarm of small objects moving with, but expanding away from the central rocket plume.
pics posted on my web page:
http://www.ozemail.com.au/~loomberah
Gordon