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HD 21513


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The position corrections of 1400 stars observed with PA II in San Juan.
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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.

Visual multiples. VIII - 1000 MK types
A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.

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다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:에리다누스자리
적경:03h27m41.36s
적위:-14°21'59.7"
가시등급:7.231
거리:129.032 파섹
적경상의 고유운동:-16.4
적위상의 고유운동:-9.2
B-T magnitude:7.305
V-T magnitude:7.238

천체목록:
일반명   (Edit)
HD 1989HD 21513
TYCHO-2 2000TYC 5302-1100-1
USNO-A2.0USNO-A2 0750-00765643
HIPHIP 16124

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