Saw hovering solid red and green light, which quickly moved a long distance then back, then hovered again.

I was taking my dog out and looked up at the sky, which was clear and with stars out. I noticed red/green lights quite high up in the NE as if it were an aircraft. I live close to RDU and often see flights approaching/leaving the airport, which is 16 miles away. The lights were unblinking and did not move at all, which caught my attention. I watched this for quite a while (2-5 minutes?). Suddenly, the lights jerked sharply towards the NW, then zipped back again and remained still for some time. This repeated twice more. I took a live photo with my iPhone and was able to capture the speed with which it moved. I went inside after taking the picture.