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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: | Hydra |
| Right ascension: | 10h37m27.04s |
| Declination: | -12°23'38.2" |
| Apparent magnitude: | 6.857 |
| Distance: | 262.467 parsecs |
| Proper motion RA: | -14.9 |
| Proper motion Dec: | 32.2 |
| B-T magnitude: | 8.604 |
| V-T magnitude: | 7.002 |
Catalogs and designations:
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