Notice that it is exactly opposite the moon, like in a mirror. This is a pretty neat example of internal reflections in the camera lens. Just as you can see your reflection when you pass a shop window when it's dark inside, at every surface of glass about 5% of the light reflects back. With multiple lenses, 5% of the reflected light then bounces off the next surface, and so on. For normal lighting, 5% of 5% of 5% of 5% (perhaps 1/160,000th) of the light just isn't enough for anybody to see in the picture. In fact, it's even less because the lenses are coated to make the reflection way less than for ordinary glass. But when there is a big super bright light, the reflection shows up. The lens coatings can't work equally well at all wavelengths, so one color (in this case cyan) dominates.
You see this same thing in pictures are concerts where there are super bright spot lights on the singer. It happens with any camera when there is a bright light.