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Subject
- astrometry[remove]711
- proper motions171
- photometry147
- optical astronomy131
- surveys128
- catalogs97
- multiple stars74
- optical observation71
- apparent magnitude59
- solar system planets58
- radial velocity46
- galaxies45
- astronomical object identification43
- infrared photometry43
- solar system42
- radio astronomy40
- trigonometric parallax38
- stars33
- radio sources31
- asteroids30
