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HD 168479


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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 second list of wide visual binaries
Not Available

A second list of wide visual binaries
Not Available

Estimation of spectral classifications for bright southern stars with interesting Stromgren indices
This paper investigates the degree of success with which uvby photometrycan be applied to predict spectral classifications for 947 A, F, and Gstars brighter than an apparent magnitude of 8.3 and with four-colorindices indicating some kind of interesting, unusual, or peculiarspectrum. One or several possible spectral classifications are estimatedfor each star from photometry alone, double stars are distinguished, andthe estimates are compared with published classifications. The resultsshow that the framework provided by uvby photometry can be extended toinclude most G and K stars, reddened stars, peculiar stars, and certaintypes of double star.

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Observation and Astrometry data

Constellation:Pavo
Right ascension:18h26m31.38s
Declination:-71°47'09.8"
Apparent magnitude:8.389
Distance:193.798 parsecs
Proper motion RA:12.5
Proper motion Dec:-0.5
B-T magnitude:9.537
V-T magnitude:8.484

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 168479
TYCHO-2 2000TYC 9299-2363-1
USNO-A2.0USNO-A2 0150-18434542
HIPHIP 90380

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