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HD 160989


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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:人馬座
右阿森松:17h43m56.51s
赤纬:-22°45'42.9"
视星:8.661
距离:327.869 天文距离
右阿森松适当运动:8.6
赤纬适当运动:0.2
B-T magnitude:10.239
V-T magnitude:8.792

目录:
适当名称   (Edit)
HD 1989HD 160989
TYCHO-2 2000TYC 6828-811-1
USNO-A2.0USNO-A2 0600-28408993
HIPHIP 86778

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