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HD 221057


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Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos.
We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.

UBV photometry of stars whose positions are accurately known. III
UBV photometric observations of 417 stars at BD declination 35-49 degfrom the NPZT(74) catalog of Yasuda et al. (1982) and the AGK3R catalogof Corben (1978), obtained with the 40-cm Cassegrain reflector atKvistaberg Observatory during 1984-1985, are reported. The data arepresented in tables, and the mean errors per observation are given as0.016 mag in V, 0.011 mag in B-V, 0.012 mag in U-B for U less than 10,and 0.026 mag in U-B for U greater than 10.

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观测天体数据

星座:仙女座
右阿森松:23h28m27.26s
赤纬:+45°41'35.4"
视星:7.673
距离:2380.952 天文距离
右阿森松适当运动:0.7
赤纬适当运动:-5.3
B-T magnitude:9.314
V-T magnitude:7.809

目录:
适当名称
HD 1989HD 221057
TYCHO-2 2000TYC 3637-741-1
USNO-A2.0USNO-A2 1350-18317546
HIPHIP 115864
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