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HD 100974


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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:Leone
Ascensione retta:11h37m17.85s
Declinazione:+06°16'12.1"
Magnitudine apparente:7.141
Distanza:166.667 parsec
Moto proprio RA:-18.9
Moto proprio Dec:9
B-T magnitude:7.387
V-T magnitude:7.162

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 100974
TYCHO-2 2000TYC 277-852-1
USNO-A2.0USNO-A2 0900-06968247
HIPHIP 56679

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