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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 Muespach, on March 28, 2017:

Case number:



On his blog on "UFOs and the paranormal", Christian MacÚ, who publishes testimonies, said he received on 30 March 2017 by email "UFO photos" taken in Muespach in the Haut-Rhin in France on the evening of 28 March 2017.

Sending two images, the witness had written to him:

"Hello, on the 28th of March in the evening I went out with my Telescope to Muespach in the Haut-Rhin when I saw a luminous ball, I took my phone and I filmed it. I don't know how to send it to you."

On March 30, 2017 again, the witness sent an email stating that he put his video on his Facebook page, that he allows his name to be indicated, and he adds to his story:

"One can see the passage of an airplane towards the end of the video. The small ball came from the northeast, northwest, about 35░ above the horizon."


Temporal data:

Date: March 28, 2017
Time: Night
Duration: 1 minutes 30 seconds.
First known report date: March 30, 2017
Reporting delay: 2 days.

Geographical data:

Department: Haut-Rhin
City: Muespach
Place: ?
Latitude: 47.548
Longitude: 7.378
Uncertainty radius: 3 km

Witnesses data:

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

Ufology data:

Reporting channel: By email to Christian MacÚ's UFO blog.
Type of location: From village area, UFO in the sky.
Visibility conditions: Night
UFO observed: Yes
UFO arrival observed: ?
UFO departure observed: Yes
Entities: No
Photographs: Yes.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: NL
ALSACAT: No strangeness, probably astronomical.


[Ref. cme1:] CHRISTIAN MACE:


UFO photos in Muespach in the Haut-Rhin in France evening of March 28, 2017

Photo 2: I enlarged the UFO of the second photo here. In Muespach, the evening of March 28, 2017 ...

CALL TO WITNESSES ... Did you also see this UFO? ...

Big Thanks to this gentleman who just sent me this Thursday morning March 30, 2017, by email, this information below, with his two photos attached:

"Hello, on the 28th of March in the evening I went out with my Telescope in Muespach in the Haut Rhin when I saw a luminous ball, I took my phone and I filmed it. I send it.

Hereby attached 2 screenshots of the video.



Here is the first picture of the UFO, which I enlarged: It seems different from the second photo of the UFO that I enlarged, see at the top, in the header of this page:

The video on Facebook:

I did not indicate the firstname and the name of this Mister, for privacy concern.

On this page, I put online the two photos. sorted 1 and 2. And I enlarged them. The second picture, at the enlarging, shows a transformation of the ufo. A "Transformer" ufo?

In a new email received this afternoon March 30, 2017, the person specified to me that his video was sent on Messenger. And he says "One sees the passage of a plane near the end of the video. Small addition, the ball came from the nors-east, direction north-west, at about 35░ above the horizon.".


Er..., I don't have Messenger...

NEW: the author of the film, Thierry Tregnago, just informed me by email, that he put the film on his Facebook page:






Above: unedited frame from the video at a time when zooming is on.

As usually, on this kind of "UFO blogs", the useful information is missing: no direction, no elevation.

So, it is impossible to verify that this was not some ordinary astronomical object. That said, Venus went below the horizon at 06:40 p.m. on that date and place.

On the video, there is no "proven" transformation of the "UFO", just the fact that the zoom is used at a time, making it look bigger The UFO is just a bright white luminous spot.

After 1 minute 30 approximately, the "UFO" seems to be fade, and "disappears". This may result from the arrival of a cloud between the "UFO" and the camera used to film.

No "move" of the "UFO" is proven. At the moment of the passage of the plane, one can see that it is not the "UFO" that moves, but the mobile phone.

The explanations may be for example:


No strangeness, probably astronomical.

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 3, 2017 Creation, [cme1].
1.0 Patrick Gross September 3, 2017 First published.

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This page was last updated on September 3, 2017.