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HD 50009


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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.

ICCD Speckle Observations of Binary Stars. XIII. Measurements During 1989- 1994 From the Cerro Tololo 4 M Telescope
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1996AJ....111..936H&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Unicorno
Ascensione retta:06h50m48.16s
Declinazione:-10°40'37.6"
Magnitudine apparente:8.97
Distanza:181.818 parsec
Moto proprio RA:-0.9
Moto proprio Dec:-3.3
B-T magnitude:9.24
V-T magnitude:8.993

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 50009
TYCHO-2 2000TYC 5383-1441-1
USNO-A2.0USNO-A2 0750-02913738
HIPHIP 32848

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