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CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars
Context: We measured the angular separations, position angles, ΔV, Δ y and Δ I of wide visual double stars during the period2003-2005. At least one component of the double stars in our sample hasan entry in the Hipparcos catalogue. Aims: Our measurements are acontribution to the study of the nature of these double stars. Methods: The northern double stars of the project were observed with the1.2 m telescope of the Kryonerion observatory and the southern with the1.0 m SAAO. We performed multiple-exposure CCD imaging of our targetsand used the standard procedure of data reduction and astrometric CCDcalibrations. Results: We present measurements of 213 northern and 219southern wide binaries.Based on observations made at Kryonerion Observatory of the NationalObservatory of Athens, Greece, and the South African AstronomicalObservatory. Full Table 1 and Tables 2, 3 are only available inelectronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/472/1055
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Datos observacionales y astrométricos
| Constelación: | Dragón |
| Ascensión Recta: | 16h55m13.68s |
| Declinación: | +63°32'00.6" |
| Magnitud Aparente: | 10.069 |
| Movimiento Propio en Ascensión Recta: | -12.2 |
| Movimiento Propio en Declinación: | 30.9 |
| B-T magnitude: | 10.705 |
| V-T magnitude: | 10.122 |
Catálogos y designaciones:
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