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HD 110903


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Inaccuracies in the spectral classification of stars from the Tycho-2 Spectral Type Catalogue
We compare the spectroscopic and trigonometric parallaxes of commonstars from the Tycho-2 Spectral Type and Hipparcos Catalogues. Thiscomparison has revealed that the distance estimations for theoverwhelming majority of stars by both methods yield very similarresults. However, there is a small fraction of stars for which thedistance estimates differ significantly. It is these stars that are thesubject of our study. We have been able to find the causes of thesedifferences.

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Observation and Astrometry data

Constellation:Κένταυρος
Right ascension:12h45m39.22s
Declination:-37°49'14.7"
Apparent magnitude:8.236
Distance:218.341 parsecs
Proper motion RA:5.5
Proper motion Dec:0.3
B-T magnitude:9.882
V-T magnitude:8.372

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 110903
TYCHO-2 2000TYC 7771-556-1
USNO-A2.0USNO-A2 0450-14679584
HIPHIP 62271

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