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HD 204583


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UBV corrections for bright stars in SIMBAD
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UBV photometry of stars whose positions are accurately known. VI
Results are presented from UBV photometric observations of 1000 stars ofthe Bright Star Catalogue and the faint extension of the FK5.Observations were carried out between July 1987 and December 1990 withthe 40-cm Cassegrain telescope of the Kvistaberg Observatory.

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).

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Observation and Astrometry data

Constellation:Cygnus
Right ascension:21h28m27.67s
Declination:+41°52'33.4"
Apparent magnitude:8.628
Distance:390.625 parsecs
Proper motion RA:4.5
Proper motion Dec:-2.9
B-T magnitude:8.649
V-T magnitude:8.63

Catalogs and designations:
Proper Names
HD 1989HD 204583
TYCHO-2 2000TYC 3190-1406-1
USNO-A2.0USNO-A2 1275-15766606
HIPHIP 106023

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