silent luminescent disc shining in the pre-dawn sky

It was a humid night and I awoke in the early morning in my dorm room as I heard the milk truck making noise in the alley below. My hair was still damp as I had washed it the night before and went to bed with it wet.  I was uncomfortable in the room and had the window opened with the curtains drawn back.  
It was then that I looked up into the sky and saw a bright saucer type object.  I was very scared as I was alone in the room.  I thought I might have been dreaming so pinched myself.  I walked around the room and then  looked for my camera and snapped a shot even though there was no film in the camera. I was in awe, both excited and scared at the same time.  I felt privledged to be a witness to the sight.  
I had always thought people who believed in this type of thing were foolish. All these thoughts crowded my head.  I felt like going next door and waking up the girl who lived there, and telling her to look out the window.  But I was afraid to even go into the hallway.  So I watched the object until it left.  Who knows how long it was there, could have been about 30 seconds to a couple minutes.  My mind was racing so seconds could have been minutes.  
I have no idea how far away it was, but it was just over the city.   The saucer was highly luminescent or polished, a silvery color.  It was illuminated, but I never saw lights per se.  When the object left at a fantastic speed, I saw what appeared to be sparkling dust slowly sifting down. I remember thinking how beautiful it looked.  I have never been able to believe it was from a different planet.  Could it have been a hologram or a photo of some type projected onto the sky?   Don't know.  
There was never anything in the paper about it, and my friends, the ones I told, were very skeptical.  Still, I didn't tell everyone as I didn't want to be known for seeing it.  And I didn't want to be mocked, which is what I may have done if it had been someone else. I was glad for the experience, but wish there had been an explanation.  Maybe someone else in Syracuse saw it that night, and like myself, was too shy to come forward. I know it was not a dream or an illusion.  I had not been drinking as it was a school night.  That's about all I can remember.
Witness elects to remain totally anonymous.  PD