An bright oval shape object hovering in the middle of two mountains

While doing a walk with my family up a hill from which you can see the Lockheed Martins campus, I notice the strange bright object that at first look to me as an airplane from a far. What struck me was the fact that no aircraft (commercial) can fly that low in that location and it wasn’t moving, it was still in place. I quickly tell my wife to see if she can see it and verify what I’m seeing, but as I tell her I notice it move a “step to the left” (as I’m looking at it from my perspective). We she couldn’t see it so we decided to continue moving forward up the hill to get a better view, when we get to the top it was gone. As we continue and I’m telling her I notice a sphere shape object (white dim/translucent white)near the lower peak of the mountain, to the left (my viewing perspective), I quickly tell her to look and used some black birds flying near as reference and at the moment that she looks that way, it quickly started disappearing, like it did starting from my left (viewing perspective) to the right gradually whilst becoming more translucent until it was gone. It was in a matter of seconds. It’s like it knew I told my wife, because it waited right until she look at that same spot (could be a coincidence right?!) that it disappeared.