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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 Mollkirch, on September 20, 2015:

Case number:



On September 20, 2015, a non-anonymous person emailed me the story of his observation of that same morning at 06:15 a.m. from his village of Mollkirch.

The person says that when satisfying a natural urge on the manure in his garden, looking at the sky, as usual, his gaze was attracted by the movement of two "stars" among many other not very bright stars at that hour when the day begins to rise.

The two bright spots were very intense and separated by a very small angular distance. They performed a circular or elliptical motion that the witness described as erratic, and that is what had caught his attention.

This "dance" lasted about 15 seconds, then the spots were motionless for about 5 seconds.

Suddenly, one of the spot spun with absolutely phenomenal acceleration in a straight line to the south to disappear behind the mountain of Mollkirch.

A few seconds later, the second spot sped straight towards the East, also with a huge acceleration.

The witness states that the intensity of the two points increased significantly at the time of acceleration, "as if there was an energy input."

The witness said he had time to observe this from his position on an angular displacement of about 30 ░ or about 30 cm in the starry background of the sky before its intensity was diffused in the day rise.

He gives a direction of about 315░, an angular height of about 70░, and indicates that the altitude was impossible to specify but it seemed very high to him, intuitively more than 10 km. He attached a location map to his email, visible below in this case file.

He said he is trained in electronics engineering and thinks he is able to appreciate the nature of physical phenomena, and that he is absolutely convinced that what he saw was not natural or of known origin, like a meteor, satellite or otherwise.

He says he is ready to admit that some countries have a more advanced aerodynamic technology than they claim, but as of this observation, he cannot understand how a pilot could survive the considerable acceleration he observed.

He concludes that if what he saw was not very spectacular in itself, without little green men, it is nevertheless something of a nature that defies all known and current laws of physics.


Temporal data:

Date: September 20, 2015
Time: 06:15 a.m.
Duration: ~20 seconds.
First known report date: September 20, 2015
Reporting delay: Hours.

Geographical data:

Department: Bas-Rhin
City: Mollkirch
Place: From the garden outside home, UFO in the sky.
Latitude: 48.504
Longitude: 7.383
Uncertainty ratio: 500 m

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 1
Witness(es) ages: Adult.
Witness(es) types: Man, trained in electronics.

Ufology data:

Reporting channel: Email to me.
Type of location: From the garden outside home, UFO in the sky.
Visibility conditions: Night
UFO observed: Yes
UFO arrival observed: No
UFO departure observed: Yes
Entities: No
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: Puzzled.
Witnesses interpretation: Nothing known.


Hynek: NL
ALSACAT: Unidentified.



These two low-intensity light spots separated by a very small angular distance, were circular, doing elliptical motions that I would describe as erratic, that's why my eye was attracted to this part of the sky ...

This "dance" lasted about 15 seconds ... and the spots became fixed for 5 seconds ...

When suddenly, one spot spun with absolutely phenomenal acceleration in a straight line south to disappear behind the MOLLKIRCH mountain...

A few seconds later the second spot spun straight eastward: same thing the acceleration of this spot was tremendous...

I had time to observe this spot seen for my position on an angular displacement of about 30 ░ (approx. 30cm in the sky on the stellar background) before its intensity was diffused in the day rising to the East.

I want to clarify that the light intensity of the 2 sots increased significantly during the acceleration, as if energy was supplied...


I'm an electronics engineer by training and I think I know how to appeciate [sic] the nature of physical phenomena ...

What I am absolutely convinced of, is that I have not witnessed a case of natural or known origin ... (meteorite, satellite or other ...)

I admit that some countries have a more advanced aerodynamic technology they pretend ..

But here, with what I've seen I do not see how a pilot could survive such acceleration ...


What I have seen is not very spectacular per se (no little green men) but likely to defy all known and current physical laws.

The attached file will give you an overview of the observation place.

Do you know of similar cases?

[Firstname] [Name]
Fixed: + 33 (0) [Phone number]
Cellphone: + 33 (0) [Phone number]

The attachment is a PDF file containing this screenshot of a map:


This is a rare case; in which the witness spontaneously indicates quantitative data such as viewing direction and angular displacement. An indication of competence is also the mention the trajectory observed at the beginning, elliptical, could be circular; indeed a circle actually appearing as an ellipse when seen from a side.

I really do not see what the two spots could have been, I see they could not have been Chinese lanterns, nor meteors, nor sounding balloons, nor stars, not planets etc.

I am left with a relatively "good" report of something that has no obvious ordinary explanation.



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 March 2, 2016 Creation, [pgs1].
1.0 Patrick Gross March 2, 2016 First published.

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This page was last updated on March 2, 2016.