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TYC 233-928-1


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Radial velocities of population II binary stars. I.
Radial velocities for 114 Hipparcos stars, mostly high transversevelocity binaries without previous radial velocity measurements, arepublished. Measurements are made with the CORAVEL-type radial velocityspectrometer. The accuracy of measurements is better than 1 km/s. Twostars, BD +30 deg 2129A and HD 117466AB are found to be radial velocityvariables, and three more stars, HD 119515A, HD 131597AB, and HD 153344,are possible radial velocity variables.

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Observation and Astrometry data

Constellation:Hydra
Right ascension:09h15m19.22s
Declination:+05°30'55.2"
Apparent magnitude:9.078
Proper motion RA:20.9
Proper motion Dec:-50.6
B-T magnitude:10.031
V-T magnitude:9.157

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 233-928-1
USNO-A2.0USNO-A2 0900-06338906
HIPHIP 45420

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