CORROBORATED
CF-GEI-20090202205 CORROBORATED

The Basse-Ham Fireball: Atmospheric Reentry Event

CASE FILE — CF-GEI-20090202205 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2009-02-28
Location Reported location of the sighting or event
Basse-Ham, Moselle, France
Duration Estimated duration of the observed phenomenon
2-3 seconds
Object Type Classification of the observed object based on witness descriptions
other
Source Origin database or archive this case was sourced from
geipan
Witnesses Number of known witnesses who reported the event
1
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On February 28, 2009, at approximately 21:45 (9:45 PM), a single witness in Basse-Ham, Moselle department in the Lorraine region of France, observed a luminous aerial phenomenon while looking at the night sky. The witness reported seeing a sudden fireball followed by a yellow flame traversing the sky horizontally from west to east. The entire observation lasted only two to three seconds before the object disappeared from view. GEIPAN (Groupe d'Études et d'Informations sur les Phénomènes Aérospatiaux Non Identifiés), France's official UFO investigation unit operated by CNES (Centre National d'Études Spatiales), investigated this sighting and assigned it a classification of 'B', indicating a probable explanation with high confidence. The investigation concluded that despite the limited information available from the single witness report, the described characteristics were consistent with an atmospheric reentry event. The brief duration, directional trajectory, fireball appearance with trailing flame, and horizontal motion across the sky are all hallmark features of space debris or meteoroid reentry. The west-to-east trajectory is consistent with typical orbital mechanics for artificial satellites and debris. This case represents a textbook example of a correctly identified natural or man-made atmospheric phenomenon, demonstrating GEIPAN's systematic approach to distinguishing explained events from genuinely anomalous observations.
02 Timeline of Events
21:45
Initial Observation
Witness observing the night sky in Basse-Ham notices a sudden appearance of a luminous object
21:45:00
Fireball Appears
A fireball with a yellow flame trail becomes visible, moving horizontally across the sky from west to east
21:45:03
Object Disappears
After 2-3 seconds of observation, the fireball and flame trail disappear from view
Post-event
Report Filed with GEIPAN
Witness submits sighting report to GEIPAN for official investigation (exact date unknown)
Post-investigation
GEIPAN Classification
GEIPAN assigns Classification 'B' (probable identification) as atmospheric reentry based on described characteristics despite limited information
03 Key Witnesses
Anonymous Witness 1
Civilian observer
unknown
Resident of Basse-Ham who was observing the night sky on February 28, 2009. No additional background information available in the official report.
"Une boule de feu suivie d'une flamme jaune traverser horizontalement le ciel d'Ouest en Est."
04 Analyst Notes -- AI Processed
This case demonstrates low analytical complexity due to limited witness data and clear explanation. The GEIPAN classification 'B' indicates 'probable identification' with good consistency between the observation and known phenomena. The single witness observation lacks corroborating reports, photographic evidence, or radar data, which limits investigative depth. However, the witness description is precise regarding key observational parameters: timing, direction, duration, and visual characteristics. The credibility assessment is hindered by minimal witness background information. We don't know the witness's experience with astronomical phenomena, their location precision, or viewing conditions. The investigator's note explicitly acknowledges 'le manque d'informations' (lack of information), yet proceeds to a confident probable explanation. The horizontal west-to-east trajectory is particularly diagnostic—meteors typically show steep descending angles, while orbital reentries follow shallower, more horizontal paths aligned with orbital mechanics. The yellow flame color and brief 2-3 second duration further support the reentry hypothesis over a natural meteor, which would typically appear white or green and potentially last longer depending on atmospheric entry angle.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Natural Meteor or Bolide
An alternative natural explanation could be an unusually bright meteor (bolide) entering the atmosphere at a shallow angle, creating the perceived horizontal trajectory. While meteors can appear in any direction, an Earth-grazing meteor traveling nearly parallel to the surface could produce similar visual effects. The yellow color might result from sodium or iron content in the meteoroid composition. However, this explanation is less likely than reentry given the specific trajectory characteristics.
06 Verdict
ANALYST VERDICT
This case is almost certainly an atmospheric reentry event of space debris or a defunct satellite, with GEIPAN's 'B' classification appropriately reflecting high confidence in this explanation. The horizontal west-to-east trajectory, brief duration, fireball appearance with yellow trailing flame, and timing all align perfectly with characteristics of controlled or uncontrolled reentries of man-made objects. The case holds minimal significance for anomalous phenomena research, serving instead as a valuable example of proper classification methodology. The primary limitation is the single-witness report without independent confirmation, though the witness description is sufficiently specific to support the conclusion. This represents routine work for GEIPAN and demonstrates their evidence-based approach to distinguishing explained events from genuinely unexplained phenomena.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
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