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HD 164266


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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:Τοξότης
Right ascension:18h01m20.13s
Declination:-24°37'55.9"
Apparent magnitude:8.471
Distance:358.423 parsecs
Proper motion RA:1
Proper motion Dec:-3.1
B-T magnitude:10.777
V-T magnitude:8.662

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 164266
TYCHO-2 2000TYC 6846-756-1
USNO-A2.0USNO-A2 0600-30007432
HIPHIP 88256

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