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HD 135437


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New Elements for 80 Eclipsing Binaries V.
This research presents new elements for 80 eclipsing binaries found withthe help of the ASAS-3, Hipparcos and NSVS databases.

Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm

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Osservazione e dati astrometrici

Costellazione:Dragone
Ascensione retta:15h11m44.42s
Declinazione:+63°37'19.1"
Magnitudine apparente:8.019
Distanza:220.264 parsec
Moto proprio RA:-23.3
Moto proprio Dec:7.4
B-T magnitude:8.197
V-T magnitude:8.034

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 135437
TYCHO-2 2000TYC 4183-241-1
USNO-A2.0USNO-A2 1500-05889409
HIPHIP 74355

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