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ALSACAT is my comprehensive catalog of UFO sighting reports in Alsace, the region is the North-East of France, whether they are "explained" or "unexplained".

The ALSACAT catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file. A general index and thematic sub-catalogs give access to these Alsatian case files.

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Case of Sermersheim, on October 22, 2010:

Case number:



An anonymous web report to the Alsatian association of ufology SPICA, republished on a UFO web forum on November 16, 2012, with no original publishing date, indicates that there was a sighting on October 22, 2010, at 11:30 p.m., in the Bas-Rhin, in Semersheim, of a flashing flying object of orange - red and green color.

The witness reported that he was driving on the N83 when he saw the flying object which was flashing in red and orange and green, above Sermersheim.

The object moved slowly, slower than a car on the highway, and headed to Hilsenheim.


Temporal data:

Date: October 22, 2010
Time: 11:30 p.m.
Duration: ?
First known report date: November 16, 2012
Reporting delay: Day, 2 years.

Geographical data:

Department: Bas-Rhin
City: Sermersheim
Place: From car driving on N83 main road, UFO in the sky.
Uncertainty ratio:

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 0
Witness(es) ages: Young adult, adult or aged.
Witness(es) types: Motorist.

Ufology data:

Reporting channel: By the web to the Alsatian ufology association SPICA.
Type of location: From car driving on main road, UFO in the sky.
Visibility conditions: Night.
UFO observed: Yes
UFO arrival observed: ?
UFO departure observed: ?
Entities: No
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: NL
ALSACAT: Possible plane.


[Ref. rnc1:] "RNSCC" WEBSITE:

10/22/2010 - 11:30 p.m. - Bas-Rhin (67) - Flying object flashing red/orange and green

Date: 10/22/2010

Hour: 11:30 p.m.

Place: Sermersheim (Bas-Rhin - 67)

Observer: Not communicated


Reported on: Not communicated



Observation in Sermersheim on 10/22/10

That night, I was driving on the N83 when I saw a flying object that flashes red / orange and green above Sermersheim around 11:30 p.m., this object moved slowly (slower than a car on the highway) and headed to Hilsenheim. If someone else witnessed it feel free to leave me a message.


City Date and hour of observation General shape
General color
SERMERSHEIM Friday 22 October 2010 at 23:30 information not communicated
Unsolved -lack of info



No duration, no heading, no angular size, no elevation, no description of a shape... With so little information, and the lack of any strangeness to the report, one can only wonder if this was not just a plane.

The witness was somewhere on the blue line (N1083 main road), he sees the thing above Sermersheim and heading to Hilsenheim, so he was likely driving southward and was likely before the entry of Sermersheim.

L'aéroport d'Entzheim est à 24 kiomètres de Sermersheim.


Possible plane.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:


Main author: Patrick Gross
Contributors: None
Reviewers: None
Editeur: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross August 30, 2015 Creation, [rnc1], [spa2].
1.0 Patrick Gross August 30, 2015 First published.

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This page was last updated on August 30, 2015.