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HD 157907


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UBV photometry of stars whose positions are accurately known. III
UBV photometric observations of 417 stars at BD declination 35-49 degfrom the NPZT(74) catalog of Yasuda et al. (1982) and the AGK3R catalogof Corben (1978), obtained with the 40-cm Cassegrain reflector atKvistaberg Observatory during 1984-1985, are reported. The data arepresented in tables, and the mean errors per observation are given as0.016 mag in V, 0.011 mag in B-V, 0.012 mag in U-B for U less than 10,and 0.026 mag in U-B for U greater than 10.

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Observation and Astrometry data

Constellation:Hercules
Right ascension:17h23m48.84s
Declination:+47°01'16.9"
Apparent magnitude:8.427
Distance:227.273 parsecs
Proper motion RA:34.6
Proper motion Dec:18
B-T magnitude:9.816
V-T magnitude:8.542

Catalogs and designations:
Proper Names
HD 1989HD 157907
TYCHO-2 2000TYC 3512-180-1
USNO-A2.0USNO-A2 1350-09184217
HIPHIP 85123

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