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TYC 1631-1689-1


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Uvby-beta photometry of visual double stars - Absolute magnitudes of intrinsically bright stars
Individual absolute visual magnitudes M(v) are derived for intrinsicallybright stars and evolved stars. The results are collected for 106objects believed to be members of binary systems. uvby-beta photometrywas empirically calibrated in terms of M(v) for main sequence stars andphotoelectrically determined apparent magnitudes. The derived M(v)values are not significantly different from those stated in the Wilsoncatalogue (1976). Binary systems with main sequence primaries andsecondary components off the main sequence were also investigated.Several systems in which at least one component may be in the pre-mainsequence contraction stage are pointed out. A wide variety of commentsand derived data are given individually for 136 double stars, includingmetallicities, distance moduli, and masses.

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观测天体数据

星座:海豚座
右阿森松:20h22m13.33s
赤纬:+16°22'22.8"
视星:9.171
右阿森松适当运动:1
赤纬适当运动:3.3
B-T magnitude:9.441
V-T magnitude:9.194

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 1631-1689-1
USNO-A2.0USNO-A2 1050-17422484
HIPHIP 100451

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