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HD 350731


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CCD Times of Minima of Selected Eclipsing Binaries
374 CCD minima observations of 187 eclipsing binaries are presented. Theobserved stars were chosen mainly from catalogue BRKA of observingprogramme of Variable Star Section of CAS.

New Eclipsing Binaries Found in the NSVS Database I.
This research presents the discovery of 100 new eclipsing binaries foundin the NSVS database.

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.

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Osservazione e dati astrometrici

Costellazione:Volpetta
Ascensione retta:19h53m45.26s
Declinazione:+20°30'33.2"
Magnitudine apparente:9.601
Moto proprio RA:1.5
Moto proprio Dec:-9.7
B-T magnitude:9.637
V-T magnitude:9.604

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 350731
TYCHO-2 2000TYC 1624-493-1
USNO-A2.0USNO-A2 1050-15482248

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