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HD 221900


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Photometry of stars in the uvgr system
Photoelectric photometry is presented for over 400 stars using the uvgrsystem of Thuan and Gunn. Stars were selected to cover a wide range ofspectral type, luminosity class, and metallicity. A mean main sequenceis derived along with reddening curves and approximate transformationsto the UBVR system. The calibration of the standard-star sequence issignificantly improved.

La mesure des vitesses radiales au prisme objectif. IX - 3e liste de vitesses radiales déterminées au prisme objectif à vision directe
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观测天体数据

星座:仙后座
右阿森松:23h35m36.36s
赤纬:+61°22'06.4"
视星:8.766
距离:174.52 天文距离
右阿森松适当运动:29.7
赤纬适当运动:-13.4
B-T magnitude:9.245
V-T magnitude:8.806

目录:
适当名称
HD 1989HD 221900
TYCHO-2 2000TYC 4280-383-1
USNO-A2.0USNO-A2 1500-09877082
HIPHIP 116432
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