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HD 92212

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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.
Micrometer observations of double stars.I. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978AJ.....83..436M&db_key=AST
Mesures d'étoiles doubles effectuées au télescope de 80 cm. de l'Observatoire de Marseille Not Available
Mesures d'étoiles doubles obtenues au télescope de Marseille. Mouvements Observés sur quelques couples Not Available
Mesures d'étoiles doubles faites au réfracteur de 38 cm. de l'Observatoire de Nice Not Available

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Observation and Astrometry data

Constellation:	しし座
Right ascension:	10^h38^m54.93^s
Declination:	+07Â°21'26.0"
Apparent magnitude:	8.975
Distance:	227.273 parsecs
Proper motion RA:	-43.3
Proper motion Dec:	-29.7
B-T magnitude:	9.55
V-T magnitude:	9.023

Catalogs and designations:

Proper Names
HD 1989	HD 92212
TYCHO-2 2000	TYC 259-11-1
USNO-A2.0	USNO-A2 0900-06739534
HIP	HIP 52122

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