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HD 281681


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The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars
The Henry Draper Extension Charts (HDEC), published in the form offinding charts, provide spectral classification for some 87000 starsmostly between 10th and 11th magnitude. This data, being highlyvaluable, as yet was practically unusable for modern computer-basedastronomy. An earlier pilot project (Roeser et al. 1991) demonstrated apossibility to convert this into a star catalogue, using measurements ofcartesian coordinates of stars on the charts and positions of theAstrographic Catalogue (AC) for subsequent identification. We presenthere a final HDEC catalogue comprising accurate positions, propermotions, magnitudes and spectral classes for 86933 stars of the HenryDraper Extension Charts.

A study of planetary nebula NGC 1514. III. Isophotic contours and the spatial model of the nebula
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观测天体数据

星座:金牛座
右阿森松:04h10m18.25s
赤纬:+30°38'54.1"
视星:8.705
距离:416.667 天文距离
右阿森松适当运动:1.8
赤纬适当运动:-12.2
B-T magnitude:10.591
V-T magnitude:8.861

目录:
适当名称
HD 1989HD 281681
TYCHO-2 2000TYC 2358-1326-1
USNO-A2.0USNO-A2 1200-02027812
HIPHIP 19477
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