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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
| A second list of wide visual binaries
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| A second list of wide visual binaries
Not Available
| Radial Velocities and Spectral Types of Some Bright Blue Stars in the Old Open Cluster M67
Abstract image available at:http://adsabs.harvard.edu/abs/1967ApJ...148..781P
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Member of following groups:
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Observation and Astrometry data
| Constellation: | Zentaur |
| Right ascension: | 13h01m47.94s |
| Declination: | -30°49'57.6" |
| Apparent magnitude: | 7.416 |
| Distance: | 273.224 parsecs |
| Proper motion RA: | -34.9 |
| Proper motion Dec: | -7.6 |
| B-T magnitude: | 9.341 |
| V-T magnitude: | 7.575 |
Catalogs and designations:
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