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HD 168564


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UBV photometry of stars whose positions are accurately known. VI
Results are presented from UBV photometric observations of 1000 stars ofthe Bright Star Catalogue and the faint extension of the FK5.Observations were carried out between July 1987 and December 1990 withthe 40-cm Cassegrain telescope of the Kvistaberg Observatory.

Fifth fundamental catalogue. Part 2: The FK5 extension - new fundamental stars
The mean positions and proper motions for 3117 new fundamental starsessentially in the magnitude range about 4.5 to 9.5 are given in thisFK5 extension. Mean apparent visual magnitude is 7.2 and is on average2.5 magnitudes fainter then the basic FK5 which has a mean magnitude of4.7. (The basic FK5 gives the mean positions and proper motions for theclassical 1535 fundamental stars). The following are discussed: theobservational material, reduction of observations, star selection, andthe system for the FK5 extension. An explanation and description of thecatalog are given. The catalog of 3117 fundamental stars for the equinoxand epoch J2000.0 and B1950.0 is presented. The parallaxes and radialvelocities for 22 extension stars with large forecasting effects aregiven. Catalogs used in the compilation of the FK5 fundamental catalogare listed.

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观测天体数据

星座:天琴座
右阿森松:18h18m12.10s
赤纬:+45°09'24.2"
视星:7.852
距离:302.115 天文距离
右阿森松适当运动:3.4
赤纬适当运动:11.3
B-T magnitude:7.981
V-T magnitude:7.863

目录:
适当名称   (Edit)
HD 1989HD 168564
TYCHO-2 2000TYC 3525-304-1
USNO-A2.0USNO-A2 1350-09599304
HIPHIP 89689

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