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HD 147653


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Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

Five-colour photometry of OB-stars in the Southern Hemisphere
Observations of OB-stars, made in 1959 and 1960 at the Leiden SouthernStation near Hartebeespoortdam, South Africa, with the VBLUW photometerattached to the 90 cm light-collector, are given in this paper. They arecompared with photometry obtained by \cite[Graham (1968),]{gra68}\cite[Walraven & Walraven (1977),]{wal77} \cite[Lub & Pel(1977)]{lub77} and \cite[Van Genderen et al. (1984).]{gen84} Formulaefor the transformation of the present observations to those of\cite[Walraven & Walraven (1977)]{wal77} and \cite[Lub & Pel(1977)]{lub77} are given. Table 4 is only available in electronic format the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) orvia http://cdsweb.u-strasbg.fr/Abstract.html

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.

Photometric study of the Southern open clusters NGC 5316 and NGC 6214
Based on UBV photoelectric photometry, the individual reddenings ofcluster stars in NGC 5316 and NGC 6124 were derived, and a fitting to anevolved sequence was performed on the reddening-free colors andmagnitudes of cluster members. For NGC 5316, an average distance modulusof 10.34 + or - 0.07, an E(B-V) value of 0.34 + or - 0.04 s.d., and anage of about 1.2 x 10 to the 8th yr were found. For NGC 6124, an E(B-V)value of 0.80 + or - 0.06 s.d., an average distance modulus of 8.75 + or- 0.04, and an age of about 1.0 x 10 to the 8th yr are determined. Thepresent color excesses and distance moduli are, in general, greater thanprevious values.

Three-colour photometry of the three southern open clusters NGC 3532, 6475 (M7), and 6124
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Observation and Astrometry data

Constellation:Skorpion
Right ascension:16h24m50.42s
Declination:-40°35'23.0"
Apparent magnitude:9.288
Proper motion RA:-1.8
Proper motion Dec:-3.9
B-T magnitude:10.089
V-T magnitude:9.355

Catalogs and designations:
Proper Names
HD 1989HD 147653
TYCHO-2 2000TYC 7857-991-1
USNO-A2.0USNO-A2 0450-24080933
HIPHIP 80418

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