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Subject
- surveys8
- astrometry6
- optical astronomy4
- proper motions4
- astronomical object identification3
- observational astronomy3
- photographic photometry3
- photometry3
- trigonometric parallax3
- asteroids2
- radial velocity2
- standard stars2
- variable stars2
- astrometric data1
- catalogs1
- galaxies1
- measurement-error-model1
- milky-way-galaxy1
- multiple-stars1
- sky-surveys1
