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HD 149999


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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:Ophiucus
Right ascension:16h39m00.40s
Declination:-22°02'38.8"
Apparent magnitude:9.26
Proper motion RA:-9.6
Proper motion Dec:0.8
B-T magnitude:9.903
V-T magnitude:9.314

Catalogs and designations:
Proper Names
HD 1989HD 149999
TYCHO-2 2000TYC 6228-1334-1
USNO-A2.0USNO-A2 0675-16180543
HIPHIP 81513

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