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HD 172425


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관련 글

A photometric study of wide visual double stars. II - Common proper motion double stars
A total of 82 common proper motion wide visual double stars have beenobserved using the uvby, H-beta systems. MK class, color excess,absolute magnitude, effective temperature, and distance have beenderived from calibrations of the above systems. From the distancesderived here and the astrometric data, taken from the literature, it wasfound that the percentage of physical binaries among the common propermotion wide double stars is significantly higher than the samepercentage among the wide visual double stars with significant relativeproper motion, but there are a lot of optical pairs among them as well.

A photometric study of wide visual double stars with significant relative proper motion
Photometric observations and uvby H-beta indices of 142 wide visualdouble stars are presented. Calibrations of the indices are used toderive MK class, color excess, absolute magnitude, effectivetemperature, and distance. The results are used to check candidatesdouble stars for the Hipparcos mission for opticity.

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관측 및 측정 데이터

별자리:뱀자리
적경:18h40m05.03s
적위:+03°21'24.0"
가시등급:8.736
거리:315.457 파섹
적경상의 고유운동:7.5
적위상의 고유운동:-7.2
B-T magnitude:8.907
V-T magnitude:8.751

천체목록:
일반명   (Edit)
HD 1989HD 172425
TYCHO-2 2000TYC 451-286-1
USNO-A2.0USNO-A2 0900-13398020
HIPHIP 91538

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