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HD 47840


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Hipparcos astrometry for 257 stars using Tycho-2 data
We present improved Hipparcos astrometry for 257 Hipparcos stars,resolved into 342 components. For 64 of the stars no astrometry wasobtained in the Hipparcos Catalogue, while for the remaining starsadditional components have been added by this solution or the positionshave been revised considerably. We have used the published Hipparcostransit data for the new solutions, together with results from thesecond reduction of the Tycho data for defining better initial values.Based on observations made with the ESA Hipparcos astrometry satellite.Table 3 is only available in electronic form at the CDS via anonymousftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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Observation and Astrometry data

Constellation:Μονόκερως
Right ascension:06h40m29.98s
Declination:-03°31'28.1"
Apparent magnitude:8.651
Distance:558.659 parsecs
Proper motion RA:-39.5
Proper motion Dec:-13.8
B-T magnitude:9.145
V-T magnitude:8.692

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 47840
TYCHO-2 2000TYC 4803-2200-1
USNO-A2.0USNO-A2 0825-02911770
HIPHIP 31942

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