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HD 103634


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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.

Radial velocities of faint stars from objective prism plates
A simple method by which the approximate radial velocity of a star maybe obtained from objective prism plates is described in detail. Themethod has been used to derive the velocities of 41 faint stars, most ofwhich have metal-weak spectra and are shown to be high-velocity objects.It is shown that this method may be generalized so that the radialvelocities for all measurable stars on an objective prism plate can beobtained.

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观测天体数据

星座:巨爵座
右阿森松:11h55m55.18s
赤纬:-22°11'02.8"
视星:7.519
距离:94.877 天文距离
右阿森松适当运动:-57.8
赤纬适当运动:3.7
B-T magnitude:9.042
V-T magnitude:7.645

目录:
适当名称   (Edit)
HD 1989HD 103634
TYCHO-2 2000TYC 6100-157-1
USNO-A2.0USNO-A2 0675-11792468
HIPHIP 58178

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