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Subject
- astrometry[remove]665
- proper motions170
- photometry145
- optical astronomy131
- surveys100
- catalogs92
- multiple stars74
- optical observation71
- apparent magnitude59
- solar system planets58
- galaxies45
- radial velocity45
- astronomical object identification43
- infrared photometry43
- solar system42
- radio astronomy40
- trigonometric parallax38
- radio sources31
- asteroids30
- open star clusters30
