3 orbs of light - Brisbane, Australia

I was sitting outside having a cigarette and browsing the net on my phone. I looked up and saw 2 orbs of light and began to film. Below them I could see a plane and knew they were something different. Slowly a 3rd orb began to appear. I ran inside after filming to grab my Fiancé so she could see it, but once we returned they were gone. I was gone for 30 seconds maximum and they had been stationary in the sky beforehand.