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- astrometry[remove]27
- astronomical-coordinate-systems4
- brown-dwarfs1
- catalogs5
- circumstellar-disks1
- ephemerides4
- exoplanets1
- galaxy-stellar-content1
- geodesics1
- hertzsprung-russell-diagram1
- history-of-astronomy1
- kolmogorov-smirnov-test1
- luminosity-function1
- main-sequence1
- parallax1
- proper-motions15
- reference systems1
- sky-surveys1
- solar-neighborhood1
- standard-stars1