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HD 27283


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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 Measures of Double Stars
Micrometer measures of 795 double stars made with the 26 inch (0.66 m)refractor of the US Naval Observatory from 1984 to 1990 are presented.

A catalogue of four-color photometry of late F-type stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1969AJ.....74..705P&db_key=AST

Measures of 278 double stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1962AJ.....67..403W&db_key=AST

Mesures d'étoiles doubles effectuées au réfracteur de 38 cm. de l'Observatoire de Nice
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Boga
Sað Açýklýk:04h18m41.82s
Yükselim:+04°45'02.5"
Görünürdeki Parlaklýk:8.868
Uzaklýk:239.808 parsek
özdevim Sað Açýklýk:13.2
özdevim Yükselim:-17.2
B-T magnitude:9.345
V-T magnitude:8.908

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 27283
TYCHO-2 2000TYC 77-436-1
USNO-A2.0USNO-A2 0900-00989304
HIPHIP 20111
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