Sighting in Lyon, December 15, 2013
Rhône, Auvergne-Rhône-Alpes, France
Sighting on December 15, 2013 in Lyon (Rhône, France). GEIPAN identified the phenomenon with certainty: it was an aircraft contrail (class A).
What happened
At around 6:30 pm, the witness was getting some fresh air at a window when they noticed a black dot with two orange trails moving across the sky. They filmed it. The phenomenon eventually vanished at the horizon, and the witness later posted the video online.
The investigation found that orange trails seen at dusk in very clear weather match the contrails of aircraft flying at high altitude, 20 to 100 km away. The video leaves no doubt on this point, and the effect is easy to observe in fine weather toward the west. GEIPAN classified the case A, meaning identified: the witness had certainly observed condensation trails.
Account rewritten by SkyUnknown from the investigation report published by GEIPAN (CNES). The original text and case documents are on the official record.
- Date
- December 15, 2013
- Location
- Lyon · town centre
- Type of sighting
- From the ground
- Source classification
- A
- Explanation
- Aircraft
Sources
- See the original document
GEIPAN (CNES)
n° 2013-12-08714
Summary written by SkyUnknown from the facts published by the source.