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HD 107730


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Monitoring of spotted RS CVn and BY Dra type stars. I. Simultaneous optical and infrared photometry
UBV(RI)cJHK photometry of 6 active stars, collected at theSouth African Astronomical Observatory in 1996 and 1997, is presented.The light and colour curves, which are compared with those observed atprevious epochs, show significant variation in their wave-likemodulation and in their maximum brightness.

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观测天体数据

星座:烏鴉座
右阿森松:12h22m45.88s
赤纬:-13°06'56.1"
视星:9.165
右阿森松适当运动:6.1
赤纬适当运动:-18
B-T magnitude:10.459
V-T magnitude:9.272

目录:
适当名称
HD 1989HD 107730
TYCHO-2 2000TYC 5532-82-1
USNO-A2.0USNO-A2 0750-07823432
HIPHIP 60372
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