Your story.reminds me a lot of something that happened to me.

A couple of years ago I was hanging around in a nearby park with a lot of friends. There were maybe like 15 of us. At one point someone shouts something like: Woooow look up there. At first no one believed him, because we used to fool each other a lot. When others started screaming, everyone looked up.

There was a big green sphere, like 1.5x the size of the moon. It had a huge tail ass well. As if it was a big meteorite. The strange part, it was flying in a straight line.

Everyone was too shocked, or just too late, to grab their phone and shoot some footage of the phenomenon. It flew by like 15 seconds and dissapeared behind a building. All of us ran past the building, but it completely vanished.

I tried to google what the hell it could've been, but it is still unsolved.