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HD 215669


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ICCD speckle observations of binary stars. X - A further survey for duplicity among the bright stars
Speckle interferometric observations are reported for 1123 starsselected from the Yale Bright Star Catalogue (BSC) in a continuingeffort to detect new binaries among the bright stars. Thirty-twopreviously unresolved binaries have been detected, including companionsto Xi UMa and 15 S Mon. Measures of 107 previously resolved systems,many of which resulted from earlier speckle observations, are alsopresented. No evidence of duplicity within a specific (m, Delta-m, rho)window of detectability was found for 984 bright stars. Many of thesystems discovered earlier have shown significant orbital motions, andwe present preliminary orbital elements for six binaries. This efforthas resulted in the discovery of 75 new, bright binaries. We considersome aspects of the duplicity frequencies among the diverse spectral andluminosity classes represented in this sample. We anticipate that thecompletion of a speckle survey of the BSC would lead to the discovery ofat least 200 additional binary systems with angular separations mostlybelow 0.20 arcsec. Many of these will have periods of the order of onedecade and will be accessible to complementary radial velocity programsof enhanced precision.

Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST

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Observation and Astrometry data

Constellation:Südlicher Fisch
Right ascension:22h47m19.10s
Declination:-34°09'40.0"
Apparent magnitude:6.28
Distance:98.232 parsecs
Proper motion RA:-62.8
Proper motion Dec:27.2
B-T magnitude:7.772
V-T magnitude:6.424

Catalogs and designations:
Proper Names
HD 1989HD 215669
TYCHO-2 2000TYC 7501-1263-1
USNO-A2.0USNO-A2 0525-43982222
BSC 1991HR 8668
HIPHIP 112501

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