UFO Sighting in High Falls, New York on June 21st 2015 – Bright Light moving left atmosphere and light diminished similar to satellite

I saw a bright light that was similar to what Jupiter or Venus looks like in the clear night sky. It was moving north-west and looked like it gained altitude. It white light with no strobing lights or red lights. It did not appear to be a plane. It appeared to gain altitude and as it left atmosphere its appearance was like that of a satellite observed with the naked eye. very faint and difficult to see. I observed the faint light as it continued to move in the trajectory. Until I could not see it anymore. I feel like it was strange behavior, never saw anything like this. I have previously seen objects that were like asteroids pass in and out of the atmosphere, but this was different as it was at too low an elevation in origination. My first thoughts were that this was actually a satellite launch, although I cannot find any documentation saying a launch took place. Also present in the sky were 2 aircraft, one was on a similar path but stayed at its altitude and was minutes behind the objects original altitude from observational origin. Another was towards the west. After I could no longer see the ufo a meteorite came from the east to west and was moving much faster than the ufo in comparison. the ufo had a speed similar to an airplane although it was heading out of the atmosphere and could have been faster than observation point would allow discernment. I decided to post this for reference to anyone who may be able to do something with this data. At no point did either airplane seem to be near the ufo although my first impression was that the airplane on a similar path was following the object as it left.