EDITORIAL GUIDE
~5 min read
UAP Shape Analysis — What Object Morphologies Appear in the Official Archive
The official UAP archive organizes reported objects by shape — a classification that reveals patterns not visible when looking at individual cases. Across NARA RG 615, AARO's case database, and the PURSUE release files, five dominant morphologies emerge: orb, triangle, disc, ellipsoid, and diamond. Shape distribution varies significantly by agency, region, and era, providing data points for pattern analysis. This guide examines what each shape category means in the official record and which cases best represent each.
Orb — The Most Frequently Reported Morphology
Orb-shaped UAP — spherical or near-spherical luminous objects — represent the highest-frequency morphology in the official record, accounting for approximately 40% of AARO's unresolved cases and the majority of PURSUE batch files. The orb category spans a wide size range: from basketball-sized objects observed at close range to spherical objects large enough to track on Aegis radar at altitude.
The most significant orb cases in the archive: the Malmstrom AFB incidents (1967), where spherical luminous objects were observed over the missile silos simultaneously with ICBM deactivations; the PURSUE R01 files documenting metallic sphere encounters in restricted military airspace; and the DoD's own training video released in 2021 showing a sphere flying past a Navy vessel off the San Diego coast. The orb's prevalence in the most recent PURSUE releases (2024–2026) suggests either an increase in sightings, an increase in reporting, or both.
Triangle — The Post-Cold War Dominant Shape
Triangle-shaped UAP sightings surge in the official record beginning in the late 1980s and continue through the 2000s. The Belgian UFO Wave (1989–1990) is the canonical triangle case: NATO F-16 radar confirmed triangular objects achieving 46G instantaneous acceleration — a physical impossibility for any known aircraft. The Belgian Air Force released its investigation publicly, making it one of the most officially documented triangle cases in any national archive.
The Stephenville, Texas sightings (2008) produced MUFON/FAA radar data showing a large triangular or structured object moving toward Crawford, Texas. The Phoenix Lights (1997) included two separate events: one involving a large triangular formation of lights, the other a stationary arc of lights. The B-2 hypothesis — that some triangle sightings are classified U.S. military platforms — is addressed in the official record only by exclusion, as agencies do not confirm the existence of classified programs in FOIA responses.
Disc — The Classic Morphology with the Longest Official Record
The disc or saucer shape has the longest documented history in the official U.S. record, beginning with Kenneth Arnold's 1947 description of objects moving 'like saucers skipping across water.' The disc category dominates the Project Blue Book records and appears in early Air Force technical assessments that took the morphology seriously enough to model aerodynamic lift properties.
High-evidential disc cases in the current archive: Socorro (1964) — Sergeant Zamora observed an egg-shaped craft with a red insignia on a landing strut at close range, leaving physical trace evidence documented by FBI and Air Force; Kecksburg (1965) — an acorn-shaped object with a ring of unknown characters around the base; the 1951 Lubbock Lights — formations of disc-like objects photographed by a Texas Tech physics professor and confirmed by Civil Aeronautics Administration radar. The disc shape's prevalence in Cold War-era records and relative decline in post-2000 records may reflect reporting category drift rather than an actual morphology change.
Ellipsoid and Diamond — The Sensor-Era Morphologies
Ellipsoid and diamond shapes emerge most prominently in sensor-recorded cases from the 2000s onward — the era when military infrared and radar systems became sophisticated enough to resolve object morphology at range. The Nimitz Tic Tac is officially classified as an ellipsoid: a white, oblong capsule approximately 40 feet long with no visible wings, propulsion, or control surfaces, moving at hypersonic speed after departing from a 50,000-foot drop.
Diamond morphology appears in the PURSUE files most prominently in the USS Russell incident (2021): pyramid-shaped or diamond-shaped objects observed by multiple crew members and captured on FLIR near the carrier. The Russell case is officially unresolved and represents one of only a handful of diamond-shape designations in the AARO database. The shape's relative rarity in the official record makes the Russell case disproportionately significant for pattern analysis — its diamond/pyramid designation appears three times in the PURSUE R02 files.