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HD 4918


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Multiple systems of astrophysical interest. III - When is a binary wide?
The possibility that the statistics of wide binaries, used to testtheories of stellar encounters, are biased against large separations isexamined on the basis of known widely spaced systems of objects withcommon space motion. It is possible to conclude that before concepts ofstellar interactions can be quantized both unbiased samples of widebinaries and some knowledge of their ages are necessary.

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观测天体数据

星座:鳳凰座
右阿森松:00h50m47.05s
赤纬:-41°33'20.5"
视星:9.024
右阿森松适当运动:79.7
赤纬适当运动:14.8
B-T magnitude:9.626
V-T magnitude:9.074

目录:
适当名称   (Edit)
HD 1989HD 4918
TYCHO-2 2000TYC 7535-646-1
USNO-A2.0USNO-A2 0450-00297386
HIPHIP 3955

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