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HD 55356

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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.
Mesures d'etoiles doubles faites aux lunettes de 74 et 50 CM de l'Observatoire de la Cote d'Azur We give 657 measurements of double stars, Table 1 by R. Gili with CCDcamera, Table 2 by P. Couteau with filar micrometer. Tables 1 and 2 areonly available in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html.
Visual multiples. VIII - 1000 MK types A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.
Measurements of Double Stars in Merida, Venezuela Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&AS...40..347V&db_key=AST
Mesures d'étoiles doubles faites à l'équatorial de 38 CM de l'Observatoire de Paris Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....6..147B&db_key=AST
Mesures d'etoiles doubles faites a Nice a la lunette de 50 cm. Not Available
Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice Not Available
Mesures d'étoiles doubles faites à l'Observatoire de Paris Not Available
Mesures d'étoiles doubles faites à Strasbourg en 1952-1953 Not Available

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观测天体数据

星座:	雙子座
右阿森松:	07^h13^m50.16^s
赤纬:	+28Â°29'38.6"
视星:	7.039
距离:	237.53 天文距离
右阿森松适当运动:	-12.9
赤纬适当运动:	-9.1
B-T magnitude:	7.049
V-T magnitude:	7.04

目录:

适当名称
HD 1989	HD 55356
TYCHO-2 2000	TYC 1908-400-1
USNO-A2.0	USNO-A2 1125-04958434
HIP	HIP 34943

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