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HD 347804


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The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars
The Henry Draper Extension Charts (HDEC), published in the form offinding charts, provide spectral classification for some 87000 starsmostly between 10th and 11th magnitude. This data, being highlyvaluable, as yet was practically unusable for modern computer-basedastronomy. An earlier pilot project (Roeser et al. 1991) demonstrated apossibility to convert this into a star catalogue, using measurements ofcartesian coordinates of stars on the charts and positions of theAstrographic Catalogue (AC) for subsequent identification. We presenthere a final HDEC catalogue comprising accurate positions, propermotions, magnitudes and spectral classes for 86933 stars of the HenryDraper Extension Charts.

Mesures d'étoiles doubles visuelles
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...71M&db_key=AST

Mesures d'étoiles doubles faites aux Observatoires Yerkes et McDonald
Not Available

Supplément au catalogue d'éphémérides d'étoiles doubles visuelles
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Osservazione e dati astrometrici

Costellazione:Volpetta
Ascensione retta:20h56m31.01s
Declinazione:+21°18'30.5"
Magnitudine apparente:9.421
Moto proprio RA:-11.3
Moto proprio Dec:-28
B-T magnitude:10.668
V-T magnitude:9.524

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 347804
TYCHO-2 2000TYC 1660-1636-1
USNO-A2.0USNO-A2 1050-18923519
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