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HD 151576


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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.

Photographic observations of visual double stars
Photographic observations of 238 pairs of visual binaries obtained on770 plates using the 60-cm visual refractor of Bosscha Observatory(Lembang, Java) during 1976-1979 are reported, continuing the catalog ofvan Albada-van Dien (1983). The data-reduction procedures are brieflydescribed, and the data are presented in a table.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yilanci
Sað Açýklýk:16h49m02.02s
Yükselim:-19°36'19.1"
Görünürdeki Parlaklýk:9.486
özdevim Sað Açýklýk:30.2
özdevim Yükselim:-8.5
B-T magnitude:10.045
V-T magnitude:9.533

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 151576
TYCHO-2 2000TYC 6226-1531-1
USNO-A2.0USNO-A2 0675-16660242
HIPHIP 82307

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