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HD 204978


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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:天鵝座
右阿森松:21h31m15.10s
赤纬:+35°52'24.7"
视星:7.565
距离:228.311 天文距离
右阿森松适当运动:0
赤纬适当运动:-4.3
B-T magnitude:8.744
V-T magnitude:7.663

目录:
适当名称   (Edit)
HD 1989HD 204978
TYCHO-2 2000TYC 2716-2651-1
USNO-A2.0USNO-A2 1200-18094324
HIPHIP 106252

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