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HD 83127


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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 velocity measurements. IV - Ground-based accompaniment to the HIPPARCOS observation program
The paper presents 396 radial velocities of stars distributed in 19fields of 4 x 4 degrees. The study employs the Fehrenbach objectiveprism method and the same measuring technique used in a previous paper(Fehrenbach et al., 1987).

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观测天体数据

星座:大熊座
右阿森松:09h37m48.38s
赤纬:+48°00'10.3"
视星:8.646
距离:140.252 天文距离
右阿森松适当运动:-52.5
赤纬适当运动:-19.8
B-T magnitude:9.266
V-T magnitude:8.698

目录:
适当名称
HD 1989HD 83127
TYCHO-2 2000TYC 3429-308-1
USNO-A2.0USNO-A2 1350-07627883
HIPHIP 47245

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