White orb,high altitude from west to east 5.00 am as it approached Boston outskirts it dimed its light. These round ball like orbs are difficult to pick out,as they match the starlight,like a camo.You have to use your perephial vision to pick one out.Some nights you can see them other times go for months without catching one. They seem to be around at 2 am to 5 am before airport traffic starts or stops it seems.