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HD 154647


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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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Observation and Astrometry data

Constellation:Ara
Right ascension:17h09m43.85s
Declination:-54°20'06.5"
Apparent magnitude:8.296
Distance:416.667 parsecs
Proper motion RA:-91.1
Proper motion Dec:-14.2
B-T magnitude:9.518
V-T magnitude:8.397

Catalogs and designations:
Proper Names
HD 1989HD 154647
TYCHO-2 2000TYC 8727-1485-1
USNO-A2.0USNO-A2 0300-30758801
HIPHIP 83960
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