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HD 191675


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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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观测天体数据

星座:天鷹座
右阿森松:20h11m23.59s
赤纬:-07°12'55.2"
视星:8.096
距离:373.134 天文距离
右阿森松适当运动:12.2
赤纬适当运动:-5.9
B-T magnitude:9.548
V-T magnitude:8.216

目录:
适当名称   (Edit)
HD 1989HD 191675
TYCHO-2 2000TYC 5173-145-1
USNO-A2.0USNO-A2 0825-17852546
HIPHIP 99482

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