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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 in the Bas-Rhin, on December 17, 2007:

Case number:



Following testimonies on the web about a sighting on December 11, 2007, someone posted to the UFO forum "Réseau National Civil de Surveillance du Ciel" on December 22, 2007, that he saw something described as "exactly the same" and as a "ball of fire with flames", "at low-altitude", seen from the North of Alsace, on December 17, 2007, at 11:30 p.m..

The Alsatian ufology association SPICA indicated in 2015 that it was probably a meteor.


Temporal data:

Date: December 17, 2007
Time: ~11:30 p.m.
Duration: ?
First known report date: December 22, 2007
Reporting delay: 5 days.

Geographical data:

Department: Bas-Rhin
City: ?
Place: From the North of Alsace, UFO in the sky.
Latitude: 48.946
Longitude: 7.737
Uncertainty ratio: 50 km

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 0
Witness(es) ages: ?
Witness(es) types: ?

Ufology data:

Reporting channel: By the web to the UFO forum ""Réseau National Civil de Surveillance du Ciel".
Type of location: ?
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: Probable meteor.



12/17/2007 - 11:30 p.m. - Bas-Rhin (67) - Fireball with flames

Witness report posted by ggrego182 on 12/22/2008 on the RNCSC Forum.

Direct link: message


hello. To add my word, i saw exactly the same thing than the second testimony*, and this, on December 17 at about 11:30 p.m. above the North of Alsace, at low altitude...

* Refers to this testimony: 11/12/2007 - 06:40 p.m. - Côte-d'Or (21) - Ball offire with flames

See also this one: 11/12/2007 - 06:00 p.m. - SWITZERLAND - Yellow ball with purple tail


City Date and hour of observation General shape
General color
UNKNOWN-LOCATION Monday 17 December 2007 at 11:30 p.m. ball, balloon or melon (3D)
information not communicated
Natural reentry
Strong hypothesis


Yes, this was probably a meteor.

There is at least one likely related report.


Probable meteor.

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
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross September 13, 2015 Creation, [rnc1], [spa1].
1.0 Patrick Gross September 13, 2015 First published.

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This page was last updated on September 13, 2015.