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A photometric study of wide visual double stars. II - Common proper motion double stars
A total of 82 common proper motion wide visual double stars have beenobserved using the uvby, H-beta systems. MK class, color excess,absolute magnitude, effective temperature, and distance have beenderived from calibrations of the above systems. From the distancesderived here and the astrometric data, taken from the literature, it wasfound that the percentage of physical binaries among the common propermotion wide double stars is significantly higher than the samepercentage among the wide visual double stars with significant relativeproper motion, but there are a lot of optical pairs among them as well.
| A second list of wide visual binaries
Not Available
| A second list of wide visual binaries
Not Available
| Visual measurements of southern double stars. II
A group of 248 micrometric observations of 104 double stars arepresented, forming the second series of a program carried out at Cordobawith a 30 cm refractor. Usually neglected IDS pair south of -60 deg areselected for observation, most of them having been measured only one ortwo times previously. The measurements are compared with all the earlierobservations to derive estimates for the personal equation in P.A. andseparation, and the nature of many pairs is discussed by making use ofcatalog proper motions.
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Observation and Astrometry data
| Constellation: | Oktant |
| Right ascension: | 21h01m23.76s |
| Declination: | -75°25'29.7" |
| Apparent magnitude: | 8.312 |
| Distance: | 229.885 parsecs |
| Proper motion RA: | 26.6 |
| Proper motion Dec: | -18.3 |
| B-T magnitude: | 8.65 |
| V-T magnitude: | 8.34 |
Catalogs and designations:
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