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TYC 633-216-1


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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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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Koc
Sað Açýklýk:02h02m52.96s
Yükselim:+11°21'58.5"
Görünürdeki Parlaklýk:10.139
özdevim Sað Açýklýk:15.1
özdevim Yükselim:-0.3
B-T magnitude:10.389
V-T magnitude:10.16

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
TYCHO-2 2000TYC 633-216-1
USNO-A2.0USNO-A2 0975-00458893
HIPHIP 9565

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