The definition of object is:"a material thing that can be seen and touched.". It doesn't necessarily have to be anything related to aliens. As I've previously stated in this very thread, it could be a number of things, even someone flying out their drone. As long as it is flying and a person can't identify it, then it is classified as a UFO.
Yea but we dont care about paper dragons flying at night or random baloons, we care about alien spaceships that might visited earth.
Apart from all flying crap nowadays, those quad propelled drones with joystick manuver that can be bought for 699$ on the internet, can be UFO's aswell ,and they sure give out strange noises.
But when i`M talking about is real alien spaceships from another galaxy visiting earth.