I walked outside to take the dog out in the front yard. i live on a dark court and it is a clear night out so i was observing the stars while the dog did his business. i immediately noted how many stars i could see and the darkness of the sky. while standing on the driveway and shortly after looking up i saw the object come over my roof into view. it appeared to be several thousand feet up in the sky. i could easily make out three distinct white lights in a perfect triangular pattern. there were no flashing aircraft lights of any kind. there was no noise as the object passed over. it was heading in a sw direction. there were no clouds in my viewing area to obscure it, only some faint ones on the horizon so i had a clear view of it. it was almost directly overhead of my neighborhood. it made a bend in its trajectory turning towards the west after a few seconds. shortly after it abruptly disappeared. during the sighting i did not want to lose sight of the object so i did not run inside for my phone to take video. i noticed blinking aircraft lights within a few degrees of the object during and after the sighting. there are multiple airports in the area and i am used to seeing all sorts of planes and this immediately struck me as not having any blinking lights and a perfect triangle shape. it also must have been moving quite fast since it covered a pretty large area of the sky in a short time. the altitude and lack of noise reminded me of seeing a satellite, but the triangle shape made me question whether it could be one. whether the planes were tracking it or just flying over i couldn't say, we see a lot of planes around here.