annual aberration
diurnal aberration
Chandler wobble
planetary aberration
Milankovitch cycle
precession of the equinoxes
periodic inequality
day
variation
superior planet
synodic period
rotational period
sidereal day
celestial orbit
orbit
crustal movement
upthrust
tectonic movement
twenty-four hour period
twenty-four hours
24-hour interval
tropical year
solar day
mean solar day
node
Copernican system
axial tilt
nutation
diurnal motion
pole
Kepler's law of planetary motion
slippage
Kepler's law
centripetal acceleration
Kepler's laws
epeirogenesis
paleodynamics
ephemeris time
TDT
Molniya orbit
summer solstice
TT
terrestrial dynamical time
perturbation
terrestrial time
retrograde
superation
orb
subaerialism
Clarke orbit