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HD 91160


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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.

Mesures d'etoiles doubles faites AU 38cm de l'Observatoire de Paris.
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Mesures d'étoiles doubles effectuées au réfracteur de 38 cm de l'Observatoires de Nice
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Observation and Astrometry data

Constellation:Άρκτος Μεγάλη
Right ascension:10h32m24.86s
Declination:+46°31'34.5"
Apparent magnitude:9.077
Distance:162.866 parsecs
Proper motion RA:8.5
Proper motion Dec:19.3
B-T magnitude:9.547
V-T magnitude:9.116

Catalogs and designations:
Proper Names
HD 1989HD 91160
TYCHO-2 2000TYC 3442-952-1
USNO-A2.0USNO-A2 1350-07788556
HIPHIP 51599
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