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HD 21721


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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Interstellar polarization in a southern H I cloud
Polarimetric observations of 54 stars in the direction of a southern H Ifilament are presented. The observed polarization is in general verylow. A weak correlation between the angle of polarization and thestructure of the filament was found. By means of the variation of thepolarization with the distance, it is inferred that the cloud is locatedat about 350 pc. Comparing the observed polarization with the colorexcess, the low degree of polarization in this region is interpreted asdue to a projection effect of the galactic magnetic field.

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观测天体数据

星座:網罟座
右阿森松:03h27m27.21s
赤纬:-57°08'18.0"
视星:9.016
右阿森松适当运动:3.4
赤纬适当运动:-18.9
B-T magnitude:10.454
V-T magnitude:9.135

目录:
适当名称   (Edit)
HD 1989HD 21721
TYCHO-2 2000TYC 8496-300-1
USNO-A2.0USNO-A2 0300-01019352
HIPHIP 16105

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