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HD 24856


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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.

Uvbyβ Photometry of Stars in the Direction of the Association Perseus OB 2
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971PASP...83..656R&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
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Observation and Astrometry data

Constellation:Perseus
Right ascension:03h58m20.41s
Declination:+32°45'23.2"
Apparent magnitude:9.006
Distance:549.451 parsecs
Proper motion RA:12
Proper motion Dec:-9.9
B-T magnitude:9.489
V-T magnitude:9.046

Catalogs and designations:
Proper Names
HD 1989HD 24856
TYCHO-2 2000TYC 2361-1025-1
USNO-A2.0USNO-A2 1200-01868913
HIPHIP 18558
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