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HD 21475


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UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue.
Not Available

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.

UBV(RI)c photometry of some standard sequences in the Harvard F regions and in the Magellanic Clouds
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1988MNRAS.231.1047M&db_key=AST

Standard Stars for VRI Photometry with S25 Response Photocathodes
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观测天体数据

星座:水蛇座
右阿森松:03h21m22.98s
赤纬:-74°35'39.3"
视星:8.037
距离:194.175 天文距离
右阿森松适当运动:-4.5
赤纬适当运动:11
B-T magnitude:8.347
V-T magnitude:8.063

目录:
适当名称   (Edit)
HD 1989HD 21475
TYCHO-2 2000TYC 9158-1418-1
USNO-A2.0USNO-A2 0150-01494924
HIPHIP 15641

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