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HD 190003


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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.

Interstellar extinction in Cygnus between the Orion and Sagittarius spiral arms
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观测天体数据

星座:狐狸座
右阿森松:20h01m55.47s
赤纬:+28°32'40.9"
视星:8.622
距离:763.359 天文距离
右阿森松适当运动:3.4
赤纬适当运动:3.4
B-T magnitude:8.602
V-T magnitude:8.621

目录:
适当名称
HD 1989HD 190003
TYCHO-2 2000TYC 2153-518-1
USNO-A2.0USNO-A2 1125-14926546
HIPHIP 98628
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