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HD 139505


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Concluding observations of loose stellar clusterings in the southern Milky Way
UBV photometry and spectral classification have been performed on 280stars in the Carina-Crux-Centaurus-Norma region, suspected of belongingto poor open clusters or associations. The work is a concluding part ofa large project for detecting and listing of such objects in order toobtain an improved concept about the true frequency of clusterings inthe Milky Way. The result indicates that a majority of the suspectedobjects are members of various types of physical stellar clusterings,occasionally cluster remnants.

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Observation and Astrometry data

Constellation:Norma
Right ascension:15h40m46.79s
Declination:-52°28'24.4"
Apparent magnitude:8.381
Distance:10000000 parsecs
Proper motion RA:-4.8
Proper motion Dec:-3.2
B-T magnitude:9.783
V-T magnitude:8.497

Catalogs and designations:
Proper Names
HD 1989HD 139505
TYCHO-2 2000TYC 8308-651-1
USNO-A2.0USNO-A2 0375-25312397
HIPHIP 76795

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