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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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Observation and Astrometry data

Constellation:Δίκτυον
Right ascension:03h27m27.21s
Declination:-57°08'18.0"
Apparent magnitude:9.016
Proper motion RA:3.4
Proper motion Dec:-18.9
B-T magnitude:10.454
V-T magnitude:9.135

Catalogs and designations:
Proper Names
HD 1989HD 21721
TYCHO-2 2000TYC 8496-300-1
USNO-A2.0USNO-A2 0300-01019352
HIPHIP 16105

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