Mysterious triangle over Taverny in 2010

Summary

On January 4, 2010, a witness during a walk noticed a dark triangular object with yellowish circles at each corner, moving east-west at a constant speed and without noise. The observation lasted 10 to 15 seconds, and no other witnesses were found. Although the report confirms the description, there are no photos or videos to support the experience. The case does not fit common explanations or commercial aircraft sightings, as the witness is familiar with these. The possibility of a small drone or scale model was considered but dismissed as unlikely in an urban night setting. Despite the coherent testimony, the lack of additional evidence keeps the case in a medium consistency category.