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HD 169928


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Optical observations of ultraviolet objects. II - Classification and photometry /l = 0 to 145 deg/
UBV photometry and MK spectral classification are presented for a sampleof stars originally selected as UV objects from satellite photometrywith the S2/68 experiment. Although most stars of the sample arespectroscopically normal, a number of hot, subluminous stars were alsofound. Radial velocities are given for some of the stars observed. It isproposed that the majority of the apparently normal early B stars athigh galactic latitudes which are not runaway stars are subluminousdisc-population analogues of horizontal branch B stars of Population II.

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Observation and Astrometry data

Constellation:Ηρακλής
Right ascension:18h26m15.52s
Declination:+18°52'09.9"
Apparent magnitude:8.433
Distance:990.099 parsecs
Proper motion RA:2.7
Proper motion Dec:-4.3
B-T magnitude:8.342
V-T magnitude:8.426

Catalogs and designations:
Proper Names
HD 1989HD 169928
TYCHO-2 2000TYC 1577-196-1
USNO-A2.0USNO-A2 1050-10509416
HIPHIP 90357

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