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HD 78685


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Southern metal-poor stars - UBVRI photometry
Considering the study of subdwarf kinematics and metallicities by Eggen,Lynden-Bell, and Sandage (1962), UBVRI photometry and normalizedultraviolet excesses are presented for 178 metal-poor stars, 144 ofwhich are contained in the kinematically unbiased list of Bidelman andMacConnell (1973). The Lowell 0.6 m telescope at Cerro Tololo was used,equipped with a single-channel photometer and a Ga-As photomultiplier.The final magnitudes and colors, number of observations, value ofdelta(U-B)0.6 (if B-V lies between 0.35 and 0.90), B and M class, andpublished spectral types for these stars are presented; severalextremely metal-poor stars are evident. In addition, sixteen nearbyvisual companions of the stars were measured, and their magnitudes andcolors are given.

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Observation and Astrometry data

Constellation:Vela
Right ascension:09h07m39.23s
Declination:-50°29'54.1"
Apparent magnitude:8.772
Distance:411.523 parsecs
Proper motion RA:-7.9
Proper motion Dec:-0.6
B-T magnitude:8.887
V-T magnitude:8.782

Catalogs and designations:
Proper Names
HD 1989HD 78685
TYCHO-2 2000TYC 8173-374-1
USNO-A2.0USNO-A2 0375-07338316
HIPHIP 44783

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