5 objects in a tight vee formation flying very fast East to West

I was looking up at the stars and I noticed some very dimly illuminated objects appear in the Eastern sky. They were moving westward in a very tight vee formation. The formation was probably half that of the diameter of the moon. I estimate that there were 5 objects formed tightly together. I had a clear view of most of the sky and these objects crossed East to West almost directly overhead in maybe 2 seconds and out of my view. There was no sound which accompanied the objects. Because they were dimly illuminated and moving so fast, I couldn't determine how far away the objects were. They were moving too fast to be satellites. Too silent to be low flying jets. I didn't think they were birds or bats because of both speed and lack of wing movement.