Case No. #1470
The Silent Triangle Above Tokyo Tower
Summary
On the night of November 3, 2021, more than two dozen people in the Minato and Shinjuku districts of Tokyo reported a large, silent triangular object moving slowly above the city skyline near Tokyo Tower. The object had white lights at each vertex and left no radar trace in records from Haneda Airport Control or the Japan Air Self-Defense Force. No flight permits or authorizations for a craft matching the description existed for the area that night. The Bureau received 27 separate reports.
Details
At 20:22 on November 3, 2021, more than a dozen tourists on the outer observation deck of Tokyo Tower noticed a triangular silhouette moving slowly south of the tower's peak. Three white lights marked its vertices; its center was entirely dark and visible only as a shape against the lit city sky. It moved far more slowly than any commercial aircraft and produced no sound — no engine noise, no rotor noise, no wind disturbance. Multiple people attempted to record it on their phones; most found later that the triangular portion appeared as an unrecoverable black patch in the footage.
About forty seconds after the initial sightings, the object shifted course northward. Residents across Minato and southern Shinjuku wards then began reporting it independently. By the time the Bureau tallied all incoming reports, the count stood at 27. Every account agreed on two points: absolute silence, and a three-light triangular formation. Estimated altitude varied — some described it as "very low," others as "above the high-rise buildings" — a discrepancy consistent with the different elevations from which it was observed.
Haneda Airport Control Center reported no authorized aircraft in that airspace at that time. The Japan Air Self-Defense Force confirmed no registered military or civilian aircraft appeared in radar records for the relevant coordinates. Drone flight permits for the Minato Ward area showed no matching application. The object's apparent speed, if near-stationary, would rule out conventional fixed-wing aerodynamics.
The shape — a triangle with lights at each vertex and a dark center — closely resembles a category of reports sometimes labeled "TR-3B" by foreign UFO research bodies, though such reports are uncommon in Japan. No weather balloon matching the described configuration exists in the Bureau's reference database. The object's ability to remain nearly stationary without audible thrust generation remains unexplained.
Two minutes after the first sighting, the object entered low cloud cover and disappeared from view. No radar trace was recovered from post-event data. Footage submitted by multiple witnesses was analyzed by an imaging expert, who stated: "No evidence of digital manipulation was found, but insufficient light levels prevent specific identification of the object." The Bureau classifies this case as unresolved.
Timeline
- Nov 3, 2021 — 20:22Tourists on Tokyo Tower's outer observation deck observe a silent triangular object. Multiple video attempts made.
- Nov 3, 2021 — 20:22 to 20:24Object turns north. Residents in Minato and Shinjuku wards file independent reports; Bureau receives 27 total.
- Nov 3, 2021 — 20:24Object enters low cloud cover and disappears. No further visual contact.
- Nov 4, 2021Bureau queries Haneda ATC and JASDF. No authorized aircraft recorded in the relevant airspace.
- Late November 2021Submitted footage analyzed by imaging specialist. No manipulation found; object detail unidentifiable due to low light.
- PresentCase recorded as unresolved. Monitoring for similar reports continues.
Witness Testimony
Witness A (male, 40s, tourist)"I thought it was an advertising blimp at first. But it was triangular, and there was no sound at all. Three lights, dark in the middle. I filmed it, but when I checked the video, there was nothing there — just black."
Witness B (female, 30s, observation deck staff)"I've worked here for over ten years and never seen anything like it. It was moving too slowly to be a plane. When it went into the clouds, the lights just stopped — like a switch. Like it was absorbed."
Witness C (male, 50s, Minato Ward resident)"What disturbed me most was the silence. Helicopters always make noise. Something that size, with no sound — that shouldn't be possible. My wife saw it too. We confirmed it together from the balcony."
Kyu's Analysis
No registration. No radar trace. No sound. Twenty-seven people saw the same object on the same night. The record stands.
