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TYC 1987-1106-1


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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.

Further Studies of A-Stars and F-Stars in the Region of the North Galactic Pole - Part Three - a Catalogue of Star Names and Positions
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观测天体数据

星座:獅子座
右阿森松:11h53m39.21s
赤纬:+26°25'39.8"
视星:10.236
右阿森松适当运动:-8.7
赤纬适当运动:-4.9
B-T magnitude:10.852
V-T magnitude:10.287

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 1987-1106-1
USNO-A2.0USNO-A2 1125-06403807
HIPHIP 57989

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