Sighting in Plouescat, April 3, 2016

At 10:10 pm, the witness, who was standing on their doorstep, noticed a very bright phenomenon to the right of the village church steeple. It gave off coloured lights, first blue and then red. No sound was heard. The witness lost sight of it at about 10:45 pm, after an observation of roughly thirty-five minutes, and took two photographs. The sky was clear. Only one account was collected.

The investigation concluded that the witness had seen Sirius. When the star is low on the horizon and under certain atmospheric conditions, its light can vary in colour and be misleading. A geometric reconstruction based on the witness's photo and the estimated shooting location showed that Sirius and the phenomenon coincided to within one or two degrees. The direction and speed of movement described by the witness were also fully consistent with those of Sirius.

The possibility of a lantern, which could well have been released on a Sunday evening, was ruled out. It would have meant the witness did not see Sirius and that a cloud was hiding it, whereas the witness reported a clear sky. The wind that day matched the direction of movement, but even at 10 km/h it would have produced an angular speed far greater than what was observed for an object at 200 m altitude and 600 m distance, and not comparable with the observation. GEIPAN therefore classified the case as A: Sirius.