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HD 108196


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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.

CCD measurements of visual binaries
CCD measurements of visual double stars were obtained with the ESO 1.5 mdanish reflector. All binaries observed are candidates for the HIPPARCOSInput Catalogue. More than 400 observations have been made in four clearnights. The accuracy obtained is comparable to the accuracy of thephotographic technique, but the observing and reduction times are oneorder of magnitude smaller.

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观测天体数据

星座:半人馬座
右阿森松:12h26m01.17s
赤纬:-49°35'17.6"
视星:6.915
距离:192.308 天文距离
右阿森松适当运动:-57
赤纬适当运动:15.7
B-T magnitude:7.033
V-T magnitude:6.925

目录:
适当名称
HD 1989HD 108196
TYCHO-2 2000TYC 8239-2419-1
USNO-A2.0USNO-A2 0375-15881025
HIPHIP 60668

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