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As its name suggests, 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.

Case of Thanvillé, on August 19, 2009:

Case number:



A UFO news bulletin indicated the publication in the newspaper L'Alsace for August 22, 2009, of an article about a UFO observed in the sky of Thanvillé on August 19, 2009.


Temporal data:

Date: August 19, 2009
Time: ?
Duration: ?
First known report date: August 22, 2009
Reporting delay: 3 days.

Geographical data:

Department: Bas-Rhin
City: Thanvillé
Place: ?
Latitude: 48.323
Longitude: 7.351
Uncertainty ratio: 2 km

Witnesses data:

Number of alleged witnesses: ?
Number of known witnesses: ?
Number of named witnesses: ?
Witness(es) ages: ?
Witness(es) types: ?

Ufology data:

Reporting channel: Article in the regional Press.
Type of location: ?
Visibility conditions: ?
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: ?
ALSACAT: Totally insufficient information.



29/ L'Alsace

L'Alsace du 22 août 2009 publie un article sur un ovni observé dans le ciel de Thanvillé le 19 août 2009.

Je n'ai pas lu l'article qui n'est plus disponible gratuitement sur le site du journal.


I feel like saying "Well, Chinese lanterns again..." but as the article in not available to me for now, I hold it right there.


Totally insufficient information.

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 September 9, 2015 Creation, [dc1].
1.0 Patrick Gross September 9, 2015 First published.

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This page was last updated on September 9, 2015.