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Subject
- surveys17
- astrometry14
- stars10
- proper-motions8
- optical astronomy4
- proper motions4
- time-domain-astronomy4
- astronomical object identification3
- photographic photometry3
- photometry3
- trigonometric parallax3
- asteroids2
- observational astronomy2
- radial velocity2
- spectroscopy2
- standard stars2
- variable stars2
- astrometric data1
- catalogs1
- galaxies1