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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 Not Available

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Osservazione e dati astrometrici

Costellazione:	Idro
Ascensione retta:	03^h21^m22.98^s
Declinazione:	-74Â°35'39.3"
Magnitudine apparente:	8.037
Distanza:	194.175 parsec
Moto proprio RA:	-4.5
Moto proprio Dec:	11
B-T magnitude:	8.347
V-T magnitude:	8.063

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 21475
TYCHO-2 2000	TYC 9158-1418-1
USNO-A2.0	USNO-A2 0150-01494924
HIP	HIP 15641

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