At around 5:00pm we noticed a stationary silver tic tac shaped object at plane level in the sky. The middle of the object had a darker circle in the centre. At first we thought it was a drone but the height it was at, its shape and its size was too big to be a drone. The object stayed in a stationary position for about 30 seconds then started to slowly move west. As the object got to around Port Melbourne it stopped and then very fastly moved up and dissapeared. We'd never seen anything like that and its speed up was not conventional.