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HD 143518


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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

ICCD speckle observations of binary stars. VIII - Measurements during 1989-1991 from the Cerro Tololo 4 M telescope
One-thousand eighty-eight observations of 947 binary star systems,observed by means of speckle interferometry with the 4 m telescope onCerro Tololo, are presented. These measurements, made during the period1989-1991, comprise the second installment of results stemming from theexpansion of our speckle program to the southern hemisphere.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

Astrometric and photometric area-scanner measurements of double stars
Accurate magnitudes and colors of individual components of binaries areneeded to provide valuable information on stellar evolution. Using anarea scanner, accurate magnitudes, as well as good astrometric data, canbe obtained for close pairs. A summary is given for the first major dataset.

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Наблюдательные данные и астрометрия

Созвездие:Скорпион
Прямое восхождение:16h01m40.54s
Склонение:-24°19'30.8"
Видимая звёздная величина:8.668
Расстояние:10000000 парсек
Собственное движение RA:-15.6
Собственное движение Dec:-18.2
B-T magnitude:10.249
V-T magnitude:8.799

Каталоги и обозначения:
Собственные имена   (Edit)
HD 1989HD 143518
TYCHO-2 2000TYC 6779-1945-1
USNO-A2.0USNO-A2 0600-19354254
HIPHIP 78510

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