CORROBORATED
CF-GEI-20110802809 CORROBORATED
The Martiel Ascending Star - ISS Misidentification Case
CASE FILE — CF-GEI-20110802809 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2011-08-19
Location Reported location of the sighting or event
Martiel, Aveyron, France
Duration Estimated duration of the observed phenomenon
10 seconds
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
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 the evening of August 19, 2011, between 22:45 and 23:00, a single witness in Martiel, Aveyron (department 12), France, observed what they described as a "very large star" during an evening walk. The luminous object appeared initially stationary in the night sky before rapidly ascending toward the zenith and suddenly disappearing. The entire observation lasted approximately 10 seconds, with no audible sounds reported during the event.
GEIPAN investigators analyzed the sighting and determined that the International Space Station (ISS) was visible from that location on the same evening. The behavior described—a bright point of light in the early night sky that suddenly vanishes—is consistent with a satellite entering Earth's shadow, a common astronomical phenomenon. The witness's perception of the object "rising to the zenith" before disappearing is likely an optical illusion frequently associated with sudden disappearances of luminous points in the sky.
The French space agency classified this case as "C" (insufficient information), noting that while the ISS explanation is highly probable, the lack of precise details in the witness testimony prevented definitive verification. The case represents a typical example of satellite misidentification, complicated by perceptual effects that can make ordinary astronomical objects appear anomalous to untrained observers.
02 Timeline of Events
22:45-23:00
Initial Observation During Evening Walk
Witness notices a "very large star" in the night sky while walking in Martiel
~22:47
Object Appears Stationary
The luminous point appears stationary in the sky, brighter than surrounding stars
~22:47:05
Rapid Ascent Toward Zenith
The object begins moving rapidly upward toward the zenith position directly overhead
~22:47:10
Sudden Disappearance
The luminous object suddenly vanishes from view. No sound heard throughout the observation. Total duration: approximately 10 seconds
August 2011
GEIPAN Investigation Initiated
French space agency receives report and begins analysis, checking astronomical data for ISS visibility
Investigation Conclusion
Case Classified as 'C'
GEIPAN determines ISS was visible that evening and classifies case as insufficient information for definitive conclusion, though satellite explanation is most probable
03 Key Witnesses
Anonymous Witness 1
Civilian
medium
Individual conducting an evening walk in Martiel who observed and reported the phenomenon to GEIPAN
"D'abord stationnaire, elle monte rapidement au zénith avant de disparaître. [Initially stationary, it rapidly climbed to the zenith before disappearing.]"
04 Analyst Notes -- AI Processed
This case demonstrates the challenges of investigating brief nocturnal light observations with limited witness detail. The GEIPAN analysis is methodical and credible: they identified the ISS visibility window for that specific date and location, recognized the behavioral match between the observation and satellite transit into Earth's shadow, and acknowledged the well-documented optical illusion affecting perceived zenith positioning during sudden disappearances.
The witness's credibility appears neutral—they reported observable facts (brightness, duration, movement pattern, lack of sound) without embellishment or extraordinary claims. The 10-second duration and rapid ascent to zenith are consistent with ISS transits, which move noticeably faster than stars due to their low orbital altitude (approximately 400km). The "very large star" description matches the ISS's typical magnitude (-2 to -4), making it one of the brightest objects in the night sky. The absence of sound confirms the object's distance, ruling out aircraft or drones. The case lacks corroborating witnesses, photographic evidence, or precise directional data that would allow trajectory reconstruction, justifying the "C" classification.
05 Theory Comparison
BELIEVER ANALYSIS
Unconventional Aerial Phenomenon
A minority interpretation might argue that the rapid acceleration toward zenith and sudden disappearance suggests technology beyond conventional satellites. However, this theory lacks supporting evidence: no unusual radar returns, no electromagnetic effects, no multiple witnesses, and behavior entirely consistent with known ISS transits. The 'rapid' movement is relative—satellites naturally appear to move quickly across the sky (completing a visible pass in 2-5 minutes). Without additional anomalous characteristics, there is no compelling reason to invoke an unconventional explanation.
SKEPTIC ANALYSIS
Iridium Flare or Other Satellite
While GEIPAN focused on the ISS, the observation could also match an Iridium satellite flare or other bright satellite transit. Iridium flares occur when sunlight reflects off satellite antenna panels, creating brief (5-20 second) bright flashes that can reach magnitude -8 (brighter than Venus). However, classic Iridium flares typically brighten and fade rather than move and disappear, making this less likely than the ISS explanation. Other satellites in similar orbits could produce identical effects when entering Earth's shadow.
06 Verdict
ANALYST VERDICT
This case is almost certainly a misidentification of the International Space Station entering Earth's shadow. The GEIPAN conclusion is sound and supported by astronomical data confirming ISS visibility that evening. The witness observed a genuine astronomical phenomenon but lacked the knowledge to identify it correctly. The perceived rapid ascent to zenith is a well-documented perceptual artifact occurring when bright objects suddenly disappear—the human visual system interprets the vanishing point as being directly overhead. This case holds minimal significance beyond serving as an educational example of satellite misidentification and the importance of astronomical literacy in UAP investigation. The "C" classification is appropriate given insufficient data for absolute certainty, though confidence in the ISS explanation exceeds 90%.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
VIEW ALL >// NO COMMENTS YET
Be the first field agent to contribute analysis on this case.
08 Live Chat 1 ROOM
ENTER LIVE CHAT
Real-time discussion with other field agents analyzing this case.