ALSACATHome 

Cette page en françaisCliquez!

ALSACAT:

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.

◀ Previous case Next case ▶

Case of Bourtzwiller, on March 20, 1978:

Case number:

ALSACAT-1978-03-20-BOURTZWILLER-1

Summary:

In the 1970s, Mrs. Gueudelot, archivist for the ufology magazine Lumières Dans La Nuit, compiled case files. One of the cases came from Denis Graff, a correspondent ufologist for the magazine, and concerned a sighting dated March 20, 1978, between 09:30 p.m. and 10:00 p.m. in Bourtzwiller.

The witness was a student who had asked to remain anonymous.

The general observation conditions were good; the sky was starry.

The witness said he had seen two objects, rectangular in shape, clearly distinct, strictly parallel, and not connected.

Each rectangle had an angular size equivalent to 10 centimeters at arm's length.

The first was orange in color and the second was white; these colors did not change.

The witness explained that "it was like a fluorescent, transparent glow." "I had the impression they knew where they were going..."

The altitude was constant, the speed steady, and the observation lasted from 15 to 20 seconds.

Data:

Temporal data:

Date: March 20, 1978
Time: Between 09:30 p.m. and 10:00 p.m.
Duration: 15 to 20 seconds.
First known report date: The 1970's.
Reporting delay: Days, years.

Geographical data:

Department: Haut-Rhin
City: Mulhouse Bourtzwiller
Place: ?
Latitude: 47.770
Longitude: 7.321
Uncertainty radius: 1.5 km.

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: 1
Number of named witnesses: 0
Witness(es) ages: Young adult.
Witness(es) types: Sudent.

Ufology data:

Reporting channel: Local ufologist Denis Graff.
Type of location: ?
Visibility conditions: Starry night, good conditions.
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: ?

Classifications:

Hynek: NL
ALSACAT: Unidentified.

Sources:

[Ref. aldl:] MRS. GUEUDELOT, "LUMIERES DANS LA NUIT" ARCHIVE:

Scan.

MARCH 20, 1978.-

BOURTZWILLER. - (68)

Time: between 9:30 p.m. and 10 p.m.

WITNESS: Mr. I. (anonymity requested) student.

General observation conditions: good. Starry sky.

OBJECT IN FORMATION: Number: two.

Shapes: rectangular, very distinct sides. Strictly parallel, not connected.

Colors of the first: orange - that of the second: white.

According to the witness, "it was like a fluorescent, transparent glow."

The altitude was constant, and the speed regular.

The witness says "I had the impression that they knew where they were going..."

No color change.

Length of each rectangle: at arm's length: 10 cm

Width at arm's length: 1 cm

DURATION OF OBSERVATION. 15 to 20 seconds.

SENT BY Mr. Denis GRAFF.

Discussion:

Map.

Bourtzwiller is a former commune of the Haut-Rhin, incorporated since 1947 into the city of Mulhouse, of which it is the most populous of the sixteen districts.

The strangeness of the case is not negligible, particularly the angular size of 10 centimeters in length at arm's length for each rectangle, which is enormous and would normally rule out any airplane or helicopter.

Unfortunately, some information is missing, such as the angular distance traveled, and whether there was sound or not.

A double meteor seems unlikely to me because, as far as I know, there were no other simultaneous sightings in the region.

Evaluation:

Unidentified.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:

Authoring:

Main author: Patrick Gross
Contributors: None
Reviewers: None
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross ZZZ Creation, [ald1].
1.0 Patrick Gross ZZZ First published.

Valid XHTML 1.0 Strict



 Feedback  |  Top  |  Back  |  Forward  |  Map  |  List |  Home
This page was last updated on ZZZ.