Strange greenish UFO hovers in the sky over Lar Mirada, California

A strange greenish disk-like object has been spotted while hovering in the sky over Mirada, California on March 30, 2018. 


The footage shows a fascinating object that moves slowly from the right to the left. 

Since it clearly flies behind certain objects, like a street light; we may assume that it is not a reflection of the camera but is it a UFO or is it something that can be explained.