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HD 186717


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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
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.

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.

Ten faint long period variable stars in the Cygnus Cloud, VV 211-220
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Stellar Spectra in Milky way Regions. II. a Region in Cygnus.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1950ApJ...112...90M&db_key=AST

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Membro dei seguenti gruppi:

Osservazione e dati astrometrici

Costellazione:Cigno
Ascensione retta:19h44m59.50s
Declinazione:+29°45'43.6"
Magnitudine apparente:8.852
Distanza:518.135 parsec
Moto proprio RA:9.5
Moto proprio Dec:5.9
B-T magnitude:8.906
V-T magnitude:8.857

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 186717
TYCHO-2 2000TYC 2151-3479-1
USNO-A2.0USNO-A2 1125-14104586
HIPHIP 97169
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