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Subject
- active galactic nuclei4
- apparent magnitude5
- astrometry8
- astronomical models10
- bl lacertae objects2
- catalogs9
- ccd photometry4
- chemical abundances9
- dwarf stars2
- ephemerides2
- exoplanets18
- extinction1
- g stars1
- galactic center1
- galaxies49
- galaxy classification systems4
- galaxy clusters49
- galaxy kinematics9
- galaxy planes1
- globular star clusters1
