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HD 206054


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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 a Nice (5eme serie. Double star measurements made at Nice
We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.

Catalogue of proper motions in the declination of stars of the Moscow zenith zone.
Not Available

Mesures d'étoiles doubles faites au rĝfraceur de 38 cm de l'Observatoire de Nice
Not Available

Micrometer Measures of Double Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJS....4...45V&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Cefeo
Ascensione retta:21h37m34.70s
Declinazione:+55°45'48.6"
Magnitudine apparente:9.378
Moto proprio RA:-1.4
Moto proprio Dec:-19.2
B-T magnitude:9.563
V-T magnitude:9.394

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 206054
TYCHO-2 2000TYC 3971-45-1
USNO-A2.0USNO-A2 1425-12104278
HIPHIP 106762
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