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HD 201089


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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The S201 far-ultraviolet imaging survey. II - A field in Cygnus
Far-ultraviolet imagery of a region in Cygnus, a 20 deg diameter fieldcentered near (1950) R. A. 21 h 31.2 m decl. +37 deg 25 arcmin, wasobtained by the S201 far-ultraviolet camera during the Apollo 16mission. In a 10 minute exposure covering the 1250-1600 A wavelengthrange (effective wavelength 1400 A), 730 star images can be detected,corresponding to a limiting ultraviolet magnitude of about m (1400) =10. Assuming nominal interstellar extinction values in this region nearthe galactic plane, this result corresponds to the detection of A0 Vstars to a distance of 300 pc and of B0 V stars to 1500 pc.Uncertainties in spectral classification and interstellar extinction forindividual objects are probably more significant than calibration ormeasurement errors. Most of the objects detected are identified withstars in the Smithsonian Astrophysical Observatory Star Catalog (1966),or the Catalog of Stellar Identifications (1979) or both, but 87 objectsremain unidentified (or are identified with late-type stars).

Catalogue d'etoiles O et B.
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Etude pour chaque champ de l'absorption et de la repartition des vitesses radiales EN fonction de la distance.
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Observation and Astrometry data

Constellation:Schwan
Right ascension:21h05m56.91s
Declination:+45°43'03.4"
Apparent magnitude:8.504
Distance:232.558 parsecs
Proper motion RA:13.2
Proper motion Dec:3.3
B-T magnitude:8.532
V-T magnitude:8.507

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 201089
TYCHO-2 2000TYC 3588-7044-1
USNO-A2.0USNO-A2 1350-13437095
HIPHIP 104140
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