CORROBORATED
CF-GEI-19771200466 CORROBORATED

The Sainte-Cérotte Moon Misidentification

CASE FILE — CF-GEI-19771200466 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
1977-12-18
Location Reported location of the sighting or event
Sainte-Cérotte, Sarthe, Pays de la Loire, France
Duration Estimated duration of the observed phenomenon
Extended observation period (~30+ minutes)
Object Type Classification of the observed object based on witness descriptions
light
Source Origin database or archive this case was sourced from
geipan
Witnesses Number of known witnesses who reported the event
10
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
In the early morning hours of December 18, 1977, at approximately 1:20 AM, around ten residents of a hamlet in Sainte-Cérotte commune (Sarthe department, 72) witnessed a red-orange phenomenon in the sky. The witnesses could not determine the distance to the object and disagreed on its exact shape, though all observed apparent movements including descent and ascension, followed by progressive disappearance toward the west. No unusual sounds accompanied the sighting, and no additional witnesses were located by gendarmerie investigations beyond this initial group. This case was initially classified as 'C' (unidentified) by GEPAN under the name SAINT-CALAIS (72) 18.12.1977, but underwent subsequent re-examination. GEIPAN investigators noted that the case was consistent, with approximately ten witnesses providing fairly precise descriptions. The credibility and sincerity of the witnesses were never questioned during the investigation. The gendarmerie collected witness statements but found no corroborating reports from outside the immediate area. Upon re-analysis, investigators determined that the phenomenon described shared numerous characteristics with a well-known astronomical object: the setting Moon. The described duration of observation, shape, size, and color all matched lunar characteristics. Critically, astronomical calculations confirmed the Moon was present in the exact area of sky observed, yet witnesses made no mention of recognizing it as the Moon. GEIPAN concluded this was a case of medium strangeness involving misidentification due to observational conditions.
02 Timeline of Events
01:20
Initial Observation Begins
Multiple residents of a hamlet in Sainte-Cérotte begin observing a red-orange phenomenon in the night sky. Witnesses cannot determine distance and disagree on exact shape.
01:20-01:50 (estimated)
Object Exhibits Apparent Movement
All witnesses observe apparent descent and ascension movements of the phenomenon. No sound is heard during the observation period.
~01:50 (estimated)
Progressive Disappearance to West
The phenomenon progressively disappears toward the western horizon, consistent with a setting celestial body.
18/12/1977 (following days)
Gendarmerie Investigation
Local gendarmerie collects witness statements. No additional witnesses found outside the hamlet. Case initially filed under SAINT-CALAIS classification.
1977-1980s
Initial GEPAN Classification
Case classified as 'C' (unidentified) by GEPAN under reference SAINT-CALAIS (72) 18.12.1977.
Recent (pre-2024)
GEIPAN Re-examination
Case undergoes re-examination with astronomical analysis. Moon confirmed present in observed sky sector. Reclassified as Class A - identified as Moon misidentification.
03 Key Witnesses
Anonymous Witnesses (Group)
Civilian residents of hamlet
medium
Approximately ten residents of a small hamlet in Sainte-Cérotte. Investigation found them sincere and credible, though lacking astronomical knowledge.
"Tous ont remarqué les mouvements (descente et ascension) de l'objet et sa disparition progressive en direction de l'Ouest."
04 Analyst Notes -- AI Processed
This case represents a textbook example of astronomical misidentification under challenging observational conditions. The timing (1:20 AM), witness fatigue, and nighttime observation conditions all contributed to the misinterpretation. The red-orange coloration is entirely consistent with a setting moon viewed through atmospheric layers near the horizon, which scatter shorter wavelengths and emphasize reds and oranges. The reported 'movements' (descent and ascension) likely represent the moon's natural setting trajectory combined with observer parallax and atmospheric refraction effects. The credibility factors are noteworthy: ten witnesses providing consistent core descriptions (color, direction of disappearance, silent nature) suggests genuine observation of a real phenomenon rather than fabrication. However, the witnesses' disagreement on shape and inability to judge distance are classic indicators of unfamiliarity with the observed object. The fact that no witness identified the Moon—despite its confirmed presence in that sky sector—demonstrates how contextual factors and preconception can override objective perception. The lack of additional reports outside this hamlet further supports the astronomical explanation, as the Moon would have been visible region-wide but only this group interpreted it as anomalous.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Collective Observational Error Under Fatigue
The late hour (1:20 AM) suggests witnesses may have been fatigued, reducing critical thinking and astronomical awareness. The disagreement on shape among witnesses indicates subjective interpretation rather than objective observation of a structured craft. The 'movements' likely represent a combination of the Moon's actual setting motion, atmospheric distortion, and auto-kinetic effect (illusion of movement in stationary lights observed against a dark background). The red-orange coloration, while striking, is entirely explicable by Rayleigh scattering of moonlight through Earth's atmosphere. No witnesses reported recognizing stars or other celestial reference points, suggesting general astronomical unfamiliarity.
06 Verdict
ANALYST VERDICT
GEIPAN's Class A determination (explained case, astronomical misidentification) is well-supported by the evidence. The re-examination correctly identified this as a Moon misidentification with high confidence. Multiple factors converge: astronomical confirmation of lunar presence in the observed location, perfect match of physical characteristics (color, apparent movement, silent nature), psychological factors (late-night fatigue, lack of astronomical context), and absence of anomalous features that would contradict the lunar hypothesis. This case holds minimal significance as a genuine UAP event but offers valuable insight into how multiple credible witnesses can collectively misidentify familiar celestial objects under suboptimal conditions. It underscores the importance of astronomical cross-checking in UFO investigations.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
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