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HD 162628


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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 preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

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Datos observacionales y astrométricos

Constelación:Ofiuco
Ascensión Recta:17h51m52.55s
Declinación:+02°53'59.3"
Magnitud Aparente:8.281
Distancia:342.466 parsecs
Movimiento Propio en Ascensión Recta:-16.8
Movimiento Propio en Declinación:-14.3
B-T magnitude:8.482
V-T magnitude:8.298

Catálogos y designaciones:
Nombres Propios
HD 1989HD 162628
TYCHO-2 2000TYC 420-321-1
USNO-A2.0USNO-A2 0900-10750293
HIPHIP 87417

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