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HD 206344


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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.

UVBY photometry of HIPPARCOS stars
Photoelectric data in the uvby system have been obtained for 367southern stars of the Hipparcos Input Catalogue. Most of the stars are Fand G main sequence and fall in the magnitude range V = 9 to 10.

7th list of new Southern double stars found at the Lamont-Hussey Observatory of the University of Michigan at Bloemfontein, South Africa.
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Datos observacionales y astrométricos

Constelación:Grulla
Ascensión Recta:21h42m50.66s
Declinación:-48°25'58.5"
Magnitud Aparente:9.175
Movimiento Propio en Ascensión Recta:-94.2
Movimiento Propio en Declinación:-24.3
B-T magnitude:9.846
V-T magnitude:9.231

Catálogos y designaciones:
Nombres Propios
HD 1989HD 206344
TYCHO-2 2000TYC 8428-692-1
USNO-A2.0USNO-A2 0375-39574220
HIPHIP 107208
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