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HD 169955


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UBV photometry of stars whose positions are accurately known.
Photometric indices V, B-V, and U-B were measured for about 560 stars ofthe AGK3R and NPZT catalogs between BD declinations 11 deg and 23 deg,using the 40-cm Cassegrain telescope of the Kvistaberg Observatory fromApril 1986 to May 1987. The observation procedure and the reductiontechnique were the same as in the earlier papers of this series by Oja(1984, 1985, 1986, and 1987). The mean errors were calculated from theinternal consistency of the data. The accuracy was found to be the sameas for the earlier parts of the survey.

List of errors found in the Henry Draper Catalogue
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Observation and Astrometry data

Constellation:Hercules
Right ascension:18h26m21.57s
Declination:+19°10'52.9"
Apparent magnitude:8.109
Distance:724.638 parsecs
Proper motion RA:-17.7
Proper motion Dec:-6.4
B-T magnitude:10.319
V-T magnitude:8.292

Catalogs and designations:
Proper Names
HD 1989HD 169955
TYCHO-2 2000TYC 1577-252-1
USNO-A2.0USNO-A2 1050-10514133
HIPHIP 90364

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