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HD 239659


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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 and New Pairs - Part Ten
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
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Determination of size, color indices, and spectral classes of stars in an area centered on R.A.=21h24m, Dec=+58.5deg.
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Observation and Astrometry data

Constellation:Céphée
Right ascension:21h24m54.99s
Declination:+57°33'46.4"
Apparent magnitude:9.432
Proper motion RA:20.4
Proper motion Dec:18.7
B-T magnitude:9.898
V-T magnitude:9.471

Catalogs and designations:
Proper Names
HD 1989HD 239659
TYCHO-2 2000TYC 3974-99-1
USNO-A2.0USNO-A2 1425-11843810
HIPHIP 105732
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