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HD 53823

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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.
Radial velocities of Southern B stars determined at the Radcliffe Observatory - VIII. Stars with HD spectral types B8 and B9 Not Available
Investigation of a Milky Way field in Canis Major Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974AJ.....79.1022C&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Unicorno
Ascensione retta:	07^h06^m10.36^s
Declinazione:	-09Â°16'53.8"
Magnitudine apparente:	8.918
Distanza:	462.963 parsec
Moto proprio RA:	-6.8
Moto proprio Dec:	-0.1
B-T magnitude:	8.878
V-T magnitude:	8.915

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 53823
TYCHO-2 2000	TYC 5381-1413-1
USNO-A2.0	USNO-A2 0750-03456059
HIP	HIP 34263

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