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ecliptic × 54the-moon × 10
the-sun × 9
orbit × 9
earth × 7
coordinate × 5
celestial-mechanics × 4
zodiac × 4
planet × 3
solar-system × 3
rotation × 3
constellations × 3
equinox × 3
orbital-mechanics × 2
solar-eclipse × 2
terminology × 2
declination × 2
inclination × 2
precession × 2
horizon × 2
apparent-motion × 2
star × 1
observational-astronomy × 1
galaxy × 1
telescope × 1