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HD 112124


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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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Observation and Astrometry data

Constellation:Musca
Right ascension:12h55m51.39s
Declination:-73°01'57.3"
Apparent magnitude:7.217
Distance:191.571 parsecs
Proper motion RA:20.8
Proper motion Dec:-5.8
B-T magnitude:8.491
V-T magnitude:7.323

Catalogs and designations:
Proper Names
HD 1989HD 112124
TYCHO-2 2000TYC 9249-708-1
USNO-A2.0USNO-A2 0150-10857565
HIPHIP 63106

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