Large, silent chevron/boomerange craft moving across Manhattan, NY--seen from Central Park

My wife and son (almost 2 years old) and I were hanging out in Central Park after dinner and laying in the Hecksher Ballfields, right beyond 2nd base of field 6. We were looking toward downtown as we laid facing the sky and my wife noticed it first and then me, a large, boomerang/chevron (I guess) shaped object flying from west to east, south to north across the sky. It was above the clouds, but still oddly visible and clearly not an airplane or any other kind of aircraft we had seen. It was very large and totally quiet and moving steadily, smooth, and quickly--no sound. We were both very surprised and curious and didn't know what to make of it. No one else seemed to notice it but there weren't a lot of other people around when we saw it--there were some people scattered around the field but it wasn't too crowded. I would love to know if others in the city noticed it beside us.