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astrometry × 66observational-astronomy × 16
coordinate × 8
distances × 6
positional-astronomy × 6
parallax × 6
telescope × 5
astrophysics × 5
asteroids × 4
photography × 4
history × 4
data-analysis × 4
gaia × 4
right-ascension × 4
star × 3
milky-way × 3
binary-star × 3
software × 3
declination × 3
the-sun × 2
amateur-observing × 2
radio-astronomy × 2
spectroscopy × 2
celestial-mechanics × 2
mercury × 2