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TYC 1657-395-1


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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:こぎつね座
Right ascension:21h09m47.38s
Declination:+20°12'29.2"
Apparent magnitude:9.524
Proper motion RA:-7.2
Proper motion Dec:-9.7
B-T magnitude:9.326
V-T magnitude:9.508

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 1657-395-1
USNO-A2.0USNO-A2 1050-19265584
HIPHIP 104472

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