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HD 254209


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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.

Etude pour chaque champ de l'absorption et de la repartition des vitesses radiales EN fonction de la distance.
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La mesure des vitesses radiales au prisme objectif. VII - 2e liste de vitesses radiales déterminées au prisme objectif à vision directe
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Observation and Astrometry data

Constellation:Ωρίων
Right ascension:06h16m17.19s
Declination:+19°36'09.3"
Apparent magnitude:8.944
Distance:446.429 parsecs
Proper motion RA:7.6
Proper motion Dec:-13.4
B-T magnitude:10.164
V-T magnitude:9.045

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 254209
TYCHO-2 2000TYC 1323-8-1
USNO-A2.0USNO-A2 1050-03246432
HIPHIP 29786
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