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Precise positions, separations, and position angles of visual binaries
Astrometric observations of 212 large visual binaries are reported. Dataobtained with a GG 495 yellow filter on IIaD photographic plates usingthe Zen astrograph (aperture 20 cm and focal length 2077 mm) of theOsservatorio Astronomico di Brera during 1985-1986 are presented inextensive tables. The potential significance of these measurements forthe catalog being constructed for the Hipparcos space observatory isindicated.
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Observation and Astrometry data
| Constellation: | Aquarius |
| Right ascension: | 21h56m20.62s |
| Declination: | -04°45'22.9" |
| Apparent magnitude: | 7.565 |
| Distance: | 595.238 parsecs |
| Proper motion RA: | 3.6 |
| Proper motion Dec: | -3.8 |
| B-T magnitude: | 9.654 |
| V-T magnitude: | 7.738 |
Catalogs and designations:
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