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HD 221564


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Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
MK spectral types are given for about 584 stars in A Supplement to theBright Star Catalogue. These are compared with Hipparcos parallaxes tocheck the reliability of those classifications. The estimated errors are+/-1.2 subtypes, and 10% of the luminosity classes may be wrong.

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观测天体数据

星座:寶瓶座
右阿森松:23h33m13.93s
赤纬:-12°36'33.0"
视星:7.096
距离:116.959 天文距离
右阿森松适当运动:-20.3
赤纬适当运动:-25.6
B-T magnitude:7.298
V-T magnitude:7.113

目录:
适当名称
HD 1989HD 221564
TYCHO-2 2000TYC 5835-135-1
USNO-A2.0USNO-A2 0750-21503867
HIPHIP 116245
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