precessed
Rotated while tilting
Precessed is the past tense of precess, meaning to undergo precession—a slow, conical rotation of a spinning body's axis.
The term appears most often in astronomy, describing how Earth's axis traces a circle over thousands of years: The ancient pole star has shifted because Earth's axis has precessed.
Gyroscopes and tops also precess when disturbed.
Sun crosses celestial midline
- axial tiltRotational axis deviation
- eclipticSun's apparent annual path
- celestial poleAxis endpoint above Earth
- Milankovitch cyclesOrbital shifts affecting climate
zodiac · constellations · epoch · obliquity · nutation · sidereal · solstice · orbit
Rotational motion quantity
- torqueRotational force measurement
- nutationOscillation in rotation axis
- rigid body dynamicsMechanics of non-deforming solids
- perturbationState of being unsettled
conservation laws · rotational motion · classical mechanics · kinetic energy · wobble
Unsteady side-to-side motion
- rotateTurn about an axis
- spinRapid rotation around axis
- axisRotation reference line
- topUppermost part or surface
revolve · gyrate · twirl · circular motion · tilt · swivel · orbital · rotation
Rotational force measurement
- angular momentumRotational motion quantity
- gimbalPivoted rotational support
- rotorSpinning mechanical assembly
- moment of inertiaResistance to angular acceleration
stability · navigation · bearings · pivot · friction · feedback loop · attitude control · gyrocompass
equinox
Sun crosses celestial midline
- axial tiltRotational axis deviation
- eclipticSun's apparent annual path
- celestial poleAxis endpoint above Earth
Milankovitch cycles · zodiac · constellations · epoch · obliquity · nutation · sidereal · solstice · orbit · perihelion
angular momentum
Rotational motion quantity
- torqueRotational force measurement
- nutationOscillation in rotation axis
- rigid body dynamicsMechanics of non-deforming solids
perturbation · conservation laws · rotational motion · classical mechanics · kinetic energy · wobble
wobble
Unsteady side-to-side motion
top · revolve · gyrate · twirl · circular motion · tilt · swivel · orbital · rotation · whirl
torque
Rotational force measurement
- angular momentumRotational motion quantity
- gimbalPivoted rotational support
- rotorSpinning mechanical assembly
moment of inertia · stability · navigation · bearings · pivot · friction · feedback loop · attitude control · gyrocompass · orientation