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HD 166179


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CCD Stromgren Photometry of Young Reddened Clusters
The capabilities of CCD uvby photometry for the study of reddened youngclusters are investigated. Observations of four fields in the directionof the clusters Basel 1, Berkeley 86, NGC 6704, and NGC 6756, with atotal of 1665 stars measured in at least the y and b bands, produce newestimates for the clusters parameters. The results are compared to thosefrom previously published studies in different photometric systemsshowing good agreement in the values of color excess and distancemodulus, with the exception of NGC 6756, for which an essentially largerdistance is found. Furthermore, the ages estimated for this cluster,Basel 1, and NGC 6704 are found to be higher than previously assumed, inparticular for the last one. The presence of red giants as clustermembers is suggested in Basel 1, NGC 6704, and NGC 6756.

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Observation and Astrometry data

Constellation:こぐま座
Right ascension:17h20m36.54s
Declination:+87°22'31.4"
Apparent magnitude:8.306
Distance:163.666 parsecs
Proper motion RA:16.7
Proper motion Dec:-0.4
B-T magnitude:8.68
V-T magnitude:8.337

Catalogs and designations:
Proper Names
HD 1989HD 166179
TYCHO-2 2000TYC 4655-841-1
USNO-A2.0USNO-A2 1725-00555378
HIPHIP 84858

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