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HD 155716


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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:蛇夫座
右阿森松:17h13m17.39s
赤纬:+00°40'22.1"
视星:8.94
距离:591.716 天文距离
右阿森松适当运动:-3.4
赤纬适当运动:4.2
B-T magnitude:9.419
V-T magnitude:8.98

目录:
适当名称   (Edit)
HD 1989HD 155716
TYCHO-2 2000TYC 399-100-1
USNO-A2.0USNO-A2 0900-09464314
HIPHIP 84246

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