Triangle shaped object glowing green along the edges sighted for approx 15sec before vision being blocked by buildings.

I was leaving JJ's Bohemia (at 10:20pm) after a live music show. I was parked on the street in front of the music venue and as I pulled out of my parking space and was sitting at the red light on MLK Blvd & Houston sts I noticed a triangle shaped object glowing green around the edges. it moved slowly behind the building at the corner of MLK Blvd & Houston st and I lost visibility of the object. I tried to view the object but it was out of my view and was not seen again. There was no noise out of the ordinary and the person with me was not able to see the object. The size could not be exactly determined but my estimation is 60'x60'x60'. There were light on the bottom of the metallic object that were glowing green and outlined the object from the underside with a green/white haze around the craft. I did not see any propulsion gasses emanating from the craft. The craft was only visible for approximately 15seconds as it disappeared behind a building structure.