I was walking home down my usual street route alone when i spotted 3 large blue lights in the sky. the lights were rotating slowly in sync around a circle of mist or cloud this suggesting what i was looking at was one whole object. the object was silent and apart from rotating did not appear to be moving in any direction. i stared at the lights for a couple of minutes and attempted to take photos on my phone, but these images came out unclear (phone was a cheap model with a poor camera). i then kept walking home while still looking over my shoulder at the object. about half way home after 5 mins from my first observation i realised the object was slowly moving across the sky. at this point i was at a street corner and again attempted to take photos with my phone, the best image i have supplied with this report. i continued to walk home while keeping an eye on the craft that was slowly moving. as i neared a park that is close to my home i could hear all the neighborhood dogs start barking even though it was a still silent night and the object was not making any noise. once i got home i kept watching the object for another minute before it moved behind my house and disappeared into the distance. i messaged my brother at this point about what i had saw, the experience left me a bit shaken. the object i estimated was around 500 feet above the ground and its size was very large around 300-500 feet, similar size to that of a football stadium.