Stationary hovering three tiered object, a short row of red lights above and below a long row of white lights.At approximately 9:09 pm EST, clear skies and visibility.I opened the door to my back deck in Harrisburg, PA, facing east. As soon as I opened the door, in the sky was an object with red lights above, white lights in the middle, red lights below. The white lighted middle section was longer then then the red sections above and below. The sections above and below were equal in size.The object hovered stationary, slightly swaying right and left. I watched for approximately 15 seconds before deciding to make a run for my iPhone. Unfortunately upon returning, the object was gone.