Nine Preliminary UAP Classes: A Living, Data-Driven Taxonomy Guided by Cross-Sensor Observations

S.E.T.I. | UAP Classification Guide

A living, data-driven taxonomy of near-Earth UAP observations is organized into nine preliminary classes—Tetra Class I, a black tetrahedron that tumbles across multiple axes while maintaining stable flight and often appearing in groups of 3 to 20 with strong infrared emissions and no propulsion or off-gassing signals; Tic Tac Class II, offwhite cylindrical craft that hover and elongate, can descend from extreme altitudes with terrain masking, appear in small groups, and produce notable effects on electronics and nearby crews; Blob Class III, a singleton red orb with a pulsing light core and erratic, rapid movements including flare-driven expansion, easily detected in IR with strong heat but lacking propulsion signatures; Beam Class IV, an IR-only hovering orb that vibrates in place for hours, commonly seen in pairs, with a signature that can iris under jam events and shows no EO visibility; Manta Ray Class V, manta-ray-shaped capable of multi-axis tumbling and rapid altitude shifts, vanishing through terrain masking and sometimes tracked by radar while visible on EO/IR; Bright Star Class VI, a reflective tetrahedron that flickers across colors, oscillates rapidly in a way that creates radar artifacts, and can exhibit directed-energy effects with a strong IR signature; Jellyfish Class VII, a white jellyfish form with a seeking head and trailing tentacles, capable of electromagnetic interference with sustained electronic warfare effects and detectable on EO and IR with robust radar signatures; Hornet Class VIII, a dual-body craft with hanging tendrils and asynchronous rotation, showing irregular motion, high-G evasive maneuvers, and strong radar and heat signatures without visible propulsion; and Egg Class IX, provisional off-white egg-shaped form with limited data and no confirmed motion or multi-spectral signatures due to insufficient observations.