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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 Artzenheim, on May 2, 2020:

Case number:



On the video hosting website Youtube appeared a so-called "exceptional" video and said to be "showing a UFO", under the title "The Artzenheim affair" with a date of 05/02/2020.

The video is presented as an "investigation by the association OVNI Investigation and the National Network of Investigators (president Daniel Robin)".

The video shows that a motorist driving on a small road, while driving, films with a mobile phone for about forty seconds an oblong thing that seems distant:


No information about an investigation is given, the video of the witness is just followed by some enlargements, which actually designate the "culprit", already known in other Alsatian places, as I explain in this file.


Temporal data:

Date: May 2, 2020
Time: Daytime.
Duration: 40 seconds.
First known report date: May 2, 2020
Reporting delay: Hours.

Geographical data:

Department: Haut-Rhin
City: Artzenheim
Place: From car driving on country road.
Latitude: 48.115
Longitude: 7.541
Uncertainty radius: 10 km.

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 0
Witness(es) ages: Adult.
Witness(es) types: Male.

Ufology data:

Reporting channel: Daniel Robin, on Youtube.
Type of location: Country road.
Visibility conditions: Excellent, daytime.
UFO observed: Yes.
UFO arrival observed: No.
UFO departure observed: No.
Entities: No.
Photographs: Yes.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: Puzzled.
Witnesses interpretation: ?


Hynek: DD
ALSACAT: Airship.


[Ref. drn1:] DANIEL ROBIN:

The start of the vdeo bears this caption:


An ibvestigation of the OVNI Investigation association
and the national Network of investigators
(president Daniel Robin)

- May 02, 2020 -

The Youtube page whete the video is published shows this caption:

Artzenheim Affair

Daniel ROBIN


287 views May 2, 2020 An exceptional video showing a ufo

The comment feature on the page is disabled.

The video shows a sequence of a person driving a car on a small road while filming the road with a mobile phone held vertically. After 20 seconds of this video, coming out of a wooded area, the video shows this:


We can make out, almost drowned in the sound of the car's engine, a male voice saying that the thing remains "on the spot."

After about forty seconds during which the motorist drives while filming, the supposed UFO remains in place, and is lost to sight when it is hidden behind a curtain of trees.

The rest of the video does not include any "investigation", but a series of enlargements (smoothed) of several images of the video, and a slow motion version.

Some enlargements are copied by the following source [oda1], this one is not:




May 03. 2020

Artzenheim Affair - 05/03/2020

Daniel ROBIN of the website proposes an exceptional video showing a ufo!


Categories: ufology



It was pretty obvious at first glance that this could be, once again, the Airship Paris touristic airship, which had already generated reports in the same region.

One of the enlargements carried out shows quite well the aspect of an airship, which, even without consulting my catalog, should have put the investigators who headlined "an exceptional video showing a UFO" on the track.

There is once again the problem of enlargements with "smoothing", which in 2020 is done automatically by the operating systems themselves... Which means that people are not even aware that this smoothing took place so as not to simply enlarge the "pixels" into larger squares.

Take for example the image I took from the video:


The supposed UFO is the small shape roughly in the middle of the image, a little above the forest. Here is an enlargement without smoothing:


We can clearly see here what are the "perverse" effects of smoothing: the UFO which is originally made up of only a few pixels, on which we understand that a logo such as "Airship Paris" or a nacelle or engines were not likely to be apparent, becomes with the smoothing a UFO which gives a misleading appearance of much better definition, on which one will be wrongly convinced that there is no logo, engine or nacelle...

That being said, one or the other image, with or without smoothing, still made it possible to understand that it was the Airship Paris dirigible:


We can see the nacelle at the bottom left, and on the right, the fins, which we find on this airship:


See here one of the other cases of ufological peregrination of this airship in 2014 towards Sarre-Union.

And here, one of the photos of the airship, much closer, taken in Phalsbourg on the same day of 2017:




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 August 18, 2022 Creation, [dnr1], [oda1].
1.0 Patrick Gross August 18, 2022 First published.

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This page was last updated on August 18, 2022.