At first glance I thought it was a meteor making a V shape. But it wasn't falling and it had no tail.
It was moving horizontally in a unnatural stable way, like that first UFO I saw almost 25 years ago, it also appeared to be about the same height
Then I saw as it moved across my field of view the V shape was standing upright, it took a while to process cause it looked so strange.
It looked like a giant bird, but this was to big to be a bird and it wasn't flapping it's wings.
It appeared quite far away, but still pretty big, had it been a bird it would have had a wingspan of a couple of meters.
And it was glowing, but not so bright it was casting light. It had a ghostly appearance, slightly transparent glowing plasma with a blue green color.
I kept trying to convince myself maybe it was an owl reflecting moonlight of it's feathers, but no.
This thing was too large, too fast and the entire object was glowing, not reflecting light.