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HD 40957


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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.

Observations of Double Stars and New Pairs. XVII.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1996ApJS..105..475H&db_key=AST

UBV photometry of stars whose positions are accurately known. III
UBV photometric observations of 417 stars at BD declination 35-49 degfrom the NPZT(74) catalog of Yasuda et al. (1982) and the AGK3R catalogof Corben (1978), obtained with the 40-cm Cassegrain reflector atKvistaberg Observatory during 1984-1985, are reported. The data arepresented in tables, and the mean errors per observation are given as0.016 mag in V, 0.011 mag in B-V, 0.012 mag in U-B for U less than 10,and 0.026 mag in U-B for U greater than 10.

Double star observations made with the 28-inch refractor 1963-1970.
Not Available

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

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Сазвежђа:Кочијаш
Ректацензија:06h04m33.66s
Deклинација:+45°35'10.4"
Apparent магнитуда:7.33
Даљина:110.988 parsecs
Proper motion RA:3
Proper motion Dec:-48.9
B-T magnitude:7.61
V-T magnitude:7.354

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 40957
TYCHO-2 2000TYC 3374-1487-1
USNO-A2.0USNO-A2 1350-06399843
HIPHIP 28775
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