UFOMYST
CaseTriangle2011

Antioch, IL, USA

((HOAX??)) A lighted boomerang shaped object in the sky.

Report quality: Low18/100

This score reflects report-quality signals on file — how complete, corroborated, and precisely located the report is — not a claim about whether the sighting was a real craft.

  • Duration parsed: 5s, a plausible sighting length
  • Brief witness text (45 characters)
  • Location geocoded exactly
  • No other reports from this city within 3 days
  • Summary contains a HOAX marker
When
2011-06-27
Where
Antioch, IL, USA
Shape
Triangle
Duration
A few seconds
Geo
42.477, -88.096 · exact
Slug
triangle-over-antioch-il-2011-d60dc7
Wave

Part of a wave

  • Historical wave2004

    The Navy Encounters & the UAP Era

    U.S. training ranges (Pacific off San Diego; Atlantic off Virginia), then worldwide reporting

    The wave that renamed the subject. The USS Nimitz 'Tic Tac' encounter (November 2004: radar drops from 80,000 ft to sea level in seconds, pilot visual by Cmdr. David Fravor, FLIR video) stayed classified-adjacent until…

    Open wave →

In context

  • Antioch, IL has 8 sightings on file here.
  • 2011 brought 219 reports from Illinois.
  • The 2010s skewed 8.4% triangle reports; the archive-wide figure is 9%.

Report

Full narrative lands with dossier import for famous cases, or the NUFORC free-text summary above for standard reports. This shell is SSR-ready: one D1 row (including connections_json) per page.