Here's the reply I received from Dave Herald:
------begin included reply-----
I had a little trouble in that the orientation and scale of the image are not
readily apparent to me - nor the exact time. But I suspect the object is (25918)
2001 DT13, which is at mag 17.4. the following is an ephemeris for that date.
2006 08 29 000000 22 29 47.5 -20 41 39
2006 08 29 040000 22 29 39.0 -20 42 55
2006 08 29 080000 22 29 30.5 -20 44 10
2006 08 29 120000 22 29 22.1 -20 45 25
2006 08 29 160000 22 29 13.6 -20 46 40
2006 08 29 200000 22 29 05.1 -20 47 54
If you find an object on an image, one of the easiest ways to identify it is to
go to:
http://scully.harvard.edu/~cgi/CheckMP
You enter the date and coordinates, and you get a list of objects and positions.
Dave Herald
Canberra, Australia
-----end included reply-----
cheers, Bird