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HD 225059


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The opposition effect of 51 Nemausa.
From three nights of uvby-observations of 51 Nemausa in September 1994,covering solar phase angle 0.64° to 1.37°, the phase factor as afunction of rotational phase was determined to vary in the range 0.05 to0.13mag/deg. The large values are due to the opposition effect. Anephemeris for physical observations facilitated the reductions andallowed a certain identification of minor details with the 1983 and 1990lightcurves. The difficulties connected with the development oflightcurves in Fourier series are discussed. The advantage of astatistical analysis in terms of uncorrelated normal points isdemonstrated.

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观测天体数据

星座:雙魚座
右阿森松:00h02m57.09s
赤纬:-00°53'37.9"
视星:8.089
距离:337.838 天文距离
右阿森松适当运动:20.5
赤纬适当运动:-17.3
B-T magnitude:9.707
V-T magnitude:8.223

目录:
适当名称
HD 1989HD 225059
TYCHO-2 2000TYC 4663-679-1
USNO-A2.0USNO-A2 0825-00012396
HIPHIP 236

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