JAL SATURN-SHAPED MOTHERSHIP (1986 REPORT)

Distant enormous Saturn-shaped object reported by Capt. Kenju Terauchi behind JAL Flight 1628, estimated by him at roughly the size of two aircraft carriers and associated with intermittent radar returns.

ANOMALY REFERENCE PICTOGRAM

REFERENCE ONLY — NOT WITNESS ARTWORK

Claims are grouped by attribute so differing descriptions, measurements, and interpretations can be compared without averaging them into a single “fact.”

SOURCE COMPARISON

Reported Craft Appearance

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CLAIM-136017reported

“The JAL crew later saw the silhouette of an enormous object behind and to the left of the aircraft, which Terauchi described as Saturn-shaped.”

The UFO Encyclopedia, 3rd Edition: The Phenomenon from the Beginning

SRC-002099 · “JAL Sighting” → “Mothership morphology”, PDF p. 1571

SUPPORTS

SOURCE COMPARISON

Craft Length

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CLAIM-136018reported

“Terauchi estimated the large object at roughly the size of two aircraft carriers.”

The UFO Encyclopedia, 3rd Edition: The Phenomenon from the Beginning

SRC-002099 · “JAL Sighting” → “Witness size estimate”, PDF p. 1571

SUPPORTS

SOURCE COMPARISON

Reported Craft Behavior

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CLAIM-136019reported

“The large object reportedly stayed behind the 747 in the same relative position during a turn and descent.”

The UFO Encyclopedia, 3rd Edition: The Phenomenon from the Beginning

SRC-002099 · “JAL Sighting” → “Relative motion”, PDF p. 1571

SUPPORTS

CLAIM-136020reported

“The large object disappeared and later was reportedly seen again before finally vanishing.”

The UFO Encyclopedia, 3rd Edition: The Phenomenon from the Beginning

SRC-002099 · “JAL Sighting” → “Visibility changes”, PDF p. 1571

SUPPORTS

CLAIM-136021reported

“Airborne and ground radar records included intermittent anomalous returns in the vicinity, although the FAA later proposed split radar returns for at least some data.”

The UFO Encyclopedia, 3rd Edition: The Phenomenon from the Beginning

SRC-002099 · “JAL Sighting” → “Radar context”, PDF pp. 1570–1572

SUPPORTS

Multiple claim rows are intentionally retained when sources disagree. ANOMALY does not silently reconcile competing values.