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HD 74670


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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'étoiles doubles faites à Nice aux lunettes de 50 et de 74 CM
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...51C&db_key=AST

Mesures d'étoiles doubles faites à l'Observatoire de Paris
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Observation and Astrometry data

Constellation:Krebs
Right ascension:08h46m03.82s
Declination:+25°21'11.1"
Apparent magnitude:8.166
Distance:199.203 parsecs
Proper motion RA:-14.9
Proper motion Dec:-24.4
B-T magnitude:8.365
V-T magnitude:8.183

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 74670
TYCHO-2 2000TYC 1946-1150-1
USNO-A2.0USNO-A2 1125-05728899
HIPHIP 43028
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