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HD 239937


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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.

A Wide-Angle Astrometric Standard in the Moscow Zenith Zone
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Visual double stars measured at Lick Observatory Mount Hamilton, California.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1979PASP...91..479H&db_key=AST

Micrometer observations of double stars.8.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975ApJS...29..315H&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
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观测天体数据

星座:仙王座
右阿森松:22h22m11.05s
赤纬:+59°59'05.3"
视星:9.887
右阿森松适当运动:20.6
赤纬适当运动:11.7
B-T magnitude:10.38
V-T magnitude:9.928

目录:
适当名称   (Edit)
HD 1989HD 239937
TYCHO-2 2000TYC 3994-693-1
USNO-A2.0USNO-A2 1425-13282414
HIPHIP 110438

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