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The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.
| A homogeneous catalog of new UBV and H-beta photometry of B- and A-type stars in and around the Scorpius-Centaurus OB association
B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.
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Observation and Astrometry data
| Constellation: | Κένταυρος |
| Right ascension: | 12h51m50.59s |
| Declination: | -31°12'06.9" |
| Apparent magnitude: | 6.953 |
| Distance: | 249.377 parsecs |
| Proper motion RA: | -26.2 |
| Proper motion Dec: | -7.6 |
| B-T magnitude: | 6.909 |
| V-T magnitude: | 6.95 |
Catalogs and designations:
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