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HD 201652


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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).

Absolute spectrophotometry of the planetary nebula NGC 7027 in the wavelength range 7000-10, 400 Å
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Observation and Astrometry data

Constellation:Κύκνος
Right ascension:21h09m38.89s
Declination:+42°25'59.4"
Apparent magnitude:7.792
Distance:403.226 parsecs
Proper motion RA:-12.8
Proper motion Dec:-19.2
B-T magnitude:7.833
V-T magnitude:7.796

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 201652
TYCHO-2 2000TYC 3176-1529-1
USNO-A2.0USNO-A2 1275-14856167
HIPHIP 104463

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