Disc / saucerCircular or flattened objects described as discs, saucers or lenticular forms.
Hangar
Hangar groups reported shapes and links them to cases, public records, witness accounts and sources. These categories describe appearances; they do not establish an object’s identity, origin or a shared cause. Cases may appear under several forms where descriptions are ambiguous or change.
Disc / saucerCircular or flattened objects described as discs, saucers or lenticular forms.
Sphere / orbSpherical objects and unresolved lights whose apparent boundary is circular.
Oval / eggRounded forms described as oval, ovoid, egg-shaped or acorn-like.
Capsule / ‘Tic Tac’Smooth, rounded and apparently wingless oblong forms associated with modern aviator reports.
Cigar / cylinderElongated forms described as cylinders, cigars, fuselages or torpedoes.
TriangleTriangular bodies or arrangements of lights interpreted as a single triangular object.
Boomerang / chevronSwept, crescent, V-shaped or chevron forms, including formations perceived as one object.
Diamond / angularDiamond, lozenge and sharply angular forms that do not fit the disc or triangle families.
PyramidApparent three-dimensional pyramids and triangular light forms recorded through optical systems.
RectangularRectangular, oblong or block-like forms reported without a conventional aircraft profile.
Cube within a sphereA compound form associated principally with modern United States naval aviator testimony.
Ring / torusAnnular forms and luminous rings whose centre appears open or less bright.
Cross / cruciformCross-shaped silhouettes or arrangements whose arms suggest a cruciform structure.
Dumbbell / compoundPaired or multi-lobed forms apparently joined into a single structure.
Irregular / shape-changingAsymmetrical, changing or poorly resolved forms that resist a stable geometric description.