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HD 100574


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A preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

UBVRI photometry of G, K, M HIPPARCOS stars
UBVRI data are presented for a set of 229 late-type stars, most of thembeing high proper motion stars. All these data are part of the InputCatalog planned observations for the Hipparcos mission.

A second list of wide visual binaries
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A second list of wide visual binaries
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观测天体数据

星座:天龍座
右阿森松:11h35m18.37s
赤纬:+70°48'08.5"
视星:8.968
距离:277.008 天文距离
右阿森松适当运动:-21.1
赤纬适当运动:-23
B-T magnitude:9.599
V-T magnitude:9.021

目录:
适当名称
HD 1989HD 100574
TYCHO-2 2000TYC 4395-977-1
USNO-A2.0USNO-A2 1575-03179221
HIPHIP 56522

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