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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 Strasbourg, on September 6, 2012:

Case number:



In March 2014, I found on a UFO website a testimony from a 18-year-old, who says he regularly sees UFOs in Strasbourg "near an airport."

He explains that he can recognize the stars, planes and satellite, so what he observed are UFOs in his opinion.

Sometimes he watches the sky, sees the stars, when suddenly he can see five or six stars move along a rather haphazard nonlinear direction, and then move all in the same direction with a weaker brightness as they move.

He can see this regularly, and on the evening of September 6, 2014, he saw a light among the stars that had a variable luminous intensity and moved suddenly quite fast. That same evening, he said, he could see five "different manifestations, quite spectacular."

Prior to publishing this testimony, he had spoken to his 15-year-old brother who had not believed until he had alerted him during an observation.


Temporal data:

Date: September 6, 2012
Time: 09:00 p.m.
Duration: 3 hours, several sightings.
First known report date: March 1, 2014, or earlier.
Reporting delay: Day, months?

Geographical data:

Department: Bas-Rhin
City: Strasbourg
Place: Near Entzheim airport?
Latitude: 48.566
Longitude: 7.724
Uncertainty ratio: 10 km

Witnesses data:

Number of alleged witnesses: 2
Number of known witnesses: 1
Number of named witnesses: 0
Witness(es) ages: ?
Witness(es) types: With a brother.

Ufology data:

Reporting channel: On the web to the UFO website "".
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: Puzzled.
Witnesses interpretation: Not planes, not satellites, not stars.


Hynek: NL
ALSACAT: Probable Chinese lanterns, and satellite flash.



09/06/2012 - (Dép.67) - Several ufos observations between 09:00 p.m. and 00:00

Date: 09/06/2012

Department: 67 (Bas-Rhin)

Localization: Strasbourg

Time: 21:30

Numbers [sic] of witnesses: 2 people

Type of observation: NL: Nocturnal Lights

Approxima [sic] duration of the observation: 0 minutes

What was seen: Several ufos observations between 09:00 p.m. and 00:00

Description of the facts:

Hello to you I'm 18 and my brother is 16 , i'm used to watching stars, and i observed UFOs, I live near an airport , I can recognize planes when i see them or satellites, sometimes I look at the sky, and I see the stars when suddenly I see 5 or 6 star move along a rather haphazard nonlinear direction, and all going in the same direction with a brightness increasingly weaker as they move, i can see them regularly, or like this evening, a light from the star that has a light intensity that varies and moves suddenly quite fast, of course before mentioning it on this web site I spoke with my brother who did not believe me until I called at the right time of an observation, tonight I've seen 5 different manifestation, pretty spectacular. You really have to see it to believe it!:)



Unfortunately, being able to recognize planes, stars and satellites from UFOs is not enough to demonstrate that one saw real UFOs, as there are many other things in the sky that one can fail to recognize for what they are.

The report is very vague; there is no quantitative data, which leaves room for doubt about what was seen.

However, it seems quite possible that the young man had seen Chinese lanterns for at least part of his observations, the part in which he describes lights that weaken when they move, what can be understood as less visible as they go away.

There may also be in there a reflection of the sun on a satellite; which ufologists often called an "Iridium flash", from the the name of satellites network that originally caused such sightings. But without precise hour, direction and elevation, we will probably never know for sure.


Probable Chinese lanterns, and satellite flash.

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 April 2, 2014 Creation, [ofe1].
1.0 Patrick Gross April 2, 2014 First published.

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This page was last updated on April 2, 2014.