ALSACAT:

On July 26, 2009 around 10:20 p.m., a witness installed on his terrace observes the starry sky. He follows for 7 to 8 seconds the linear displacement S-N of a white luminous dot at an elevation of 25 ° to 35 ° which he assimilates to the displacement of a satellite.

Leaving this luminous dot for one or two seconds, the witness is surprised not to see it anymore on its trajectory.

However, he finds a luminous dot starting a turn towards the West of a duration of 2 to 3 seconds (in the direction of the aerodrome of Habsheim).

This luminous dot then takes a linear trajectory at high speed passing at the vertical of the witness.

No particular noise was heard during the 10 to 12 second observation and that ends at 11:48 p.m.

The witness remains intrigued by the overall trajectory of the luminous dot including a change of direction and the significant acceleration of the phenomenon without any noise being heard.

Even if there is no evidence that this is the trajectory of a single luminous dot, different assumptions are invalidated: aircraft passes (no radar track in the Rixsheim sector in the time slot 11:30-00:00 p.m., presence of stars (Jupiter too low on the horizon) and passage of a satellite (passage of COSMOS 1151-Rocket but at 57 ° elevation).

The phenomenon, although not very strange, remains unexplained. The classification D1 is justified by the uniqueness of the testimony and the impossibility of estimating the distance of the phenomenon.