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HD 193946


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available

UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
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The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
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Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
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Additional Variable Stars in the Northern Luminous Stars Catalogues
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Distribution of OB stars and absorbing matter in the region around P CYG
The results of spectrophotometric observations of 277 OB stars in a 7 x7-deg region around P Cyg, obtained in 8-sec, 45-sec, and 8-minexposures on ORWO ZU-21 plates with a 4-deg 272-A/mm-dispersionobjective prism on the 40-in. Schmidt telescope at BiurakanAstrophysical Observatory on October 14-19, 1979, are presented intables and graphs and characterized. Data reported include 400-480-nmabsolute spectrophotometric gradients, color excesses, and distances. Itis found that concentrations of OB stars with associated absorbingmatter exist toward the associations Cyg OB9 (two concentrations at 800and 1800 pc), Cyg OB3 (three concentrations at 1.4, 2.5, and 3.7 kpc),OB1 (at 1.6 kpc), Cyg OB8 (at 1.5 kpc), and over the entire observedregion at a distance of about 500 pc.

Exciting stars and the distances of the diffuse nebulae
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Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978ApJS...38..309H&db_key=AST

The high-luminosity boundary of the beta CEP instability strip.
Abstract image available at:http://adsabs.harvard.edu/abs/1972AJ.....77..381P

The space distribution and kinematics of supergiants
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Catalogue d'etoiles O et B.
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The spectra, magnitudes and colours of O-A type stars in an area of the Milky Way, with the Center alpha = 20h16m, delta = +42 D 30'.
Not Available

Studies in Galactic STRUCTURE.II.LUMINOSITY Classification for 1270 Blue Giant Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJS....2...41M&db_key=AST

A Finding List of O and B Stars of High Luminosity.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1951ApJ...113..141N&db_key=AST

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Observation and Astrometry data

Constellation:Cygnus
Right ascension:20h21m32.72s
Declination:+39°49'45.6"
Apparent magnitude:9.027
Distance:296.736 parsecs
Proper motion RA:-4.1
Proper motion Dec:-6.6
B-T magnitude:9.993
V-T magnitude:9.107

Catalogs and designations:
Proper Names
HD 1989HD 193946
TYCHO-2 2000TYC 3156-479-1
USNO-A2.0USNO-A2 1275-13853037
HIPHIP 100391

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