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HD 50933


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Speckle Observations of Composite Star Candidates
Speckle observations are reported for 53 stars with composite spectraselected from the Michigan Spectral Catalogue in an effort to improvethe orbits of known binaries and to discover new binaries among thisclass of objects. The data were obtained using the 1.3 and 2.4 mtelescopes at the Michigan-Dartmouth-MIT Observatory and the GeorgiaTech Research Institute speckle imaging system. For 50 stars in thesample for which no indication of duplicity was found in our data, wemay place an upper limit of <=0.2" on the separations at the epochsof observation. Three stars were resolved, including HD 26796, alsodiscovered to be double by Hipparcos. A discussion of the accuracy ofthe measurements based on comparisons with speckle standard stars ispresented.

Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995AJ....109.2828T&db_key=AST

Stellar Spectra in Milky way Regions. V.A Region in Monoceros.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956ApJS....2..271M&db_key=AST

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Datos observacionales y astrométricos

Constelación:Unicornio
Ascensión Recta:06h55m08.72s
Declinación:-02°28'52.5"
Magnitud Aparente:7.325
Distancia:10000 parsecs
Movimiento Propio en Ascensión Recta:-4.2
Movimiento Propio en Declinación:-1.7
B-T magnitude:8.659
V-T magnitude:7.436

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 50933
TYCHO-2 2000TYC 4805-851-1
USNO-A2.0USNO-A2 0825-03490409
HIPHIP 33257

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