Window seats on jr train along river travelling north from kyoto station to takayama, japan. clear day over a running river. photographing hundreds of contrails above train and low trees, hillside. distracted by unusual activity in sky, no initial visual contact with orb. two photographs taken with an i-phone 6 plus. object ran over, along river. green and brighter that all surrounding surfaces. no reactions until 20 seconds later, viewing last two photos. lost sight of object due to rapid movement and opposite directions.