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HD 199679


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Interstellar extinction in the vicinity of the North America and Pelican Nebulae. II
The results of photoelectric photometry of 564 stars in the Vilniusseven-color system in three areas near the North America and PelicanNebulae are given. Photometric spectral types, absolute magnitudes,color excesses, interstellar extinction,s and distances to the stars aredetermined. We find that the dark cloud separating both nebulae is at580 pc distance. A number of stars immersed in the dark cloud have beenfound. It seems that the dark cloud extends south down to 40 degdeclination. The area southwest of alpha Cygni in the declination zones42 deg and 43 deg is comparatively transparent at least up to 1 kpc.

Radial velocity measurements. II - Ground-based observations of the program stars for the HIPPARCOS satellite
New radial velocities for 446 stars of magnitude 9.0 or brighter in 1616-sq-deg fields of the Northern Hemisphere are determined by automaticPDS measurement of 80-A/mm-dispersion spectra obtained at theObservatoire de Haute Provence using a 17-cm-diameter objective prism.The fields were selected to provide data for the input catalog of theESA Hipparcos astrometric satellite. The measurement techniques andprecision are discussed, and the results are presented in extensivetables and graphs.

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Observation and Astrometry data

Constellation:Cygne
Right ascension:20h57m25.02s
Declination:+41°41'22.5"
Apparent magnitude:7.342
Distance:230.947 parsecs
Proper motion RA:4.1
Proper motion Dec:5.1
B-T magnitude:7.502
V-T magnitude:7.356

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 199679
TYCHO-2 2000TYC 3175-422-1
USNO-A2.0USNO-A2 1275-14386333
HIPHIP 103442

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