Hi Gem
-8 WOW! Only manmade things Ive ever seen at -8 with that much Sun still around (or otherwise
) have been Iridium flares.
I checked and it def wasnt one of those.
Heres the Heavens-above URL for Canberra. Might help to identify future mystery sightings.
http://www.heavens-above.com/?Loc=Ca...lt=609&TZ=AEST
Erg