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HD 138833


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Ýlgili Makaleler

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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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yilan
Sað Açýklýk:15h34m31.60s
Yükselim:+04°43'50.3"
Görünürdeki Parlaklýk:7.062
Uzaklýk:87.873 parsek
özdevim Sað Açýklýk:-40.8
özdevim Yükselim:-12.4
B-T magnitude:7.229
V-T magnitude:7.076

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 138833
TYCHO-2 2000TYC 358-1215-1
USNO-A2.0USNO-A2 0900-08124966
HIPHIP 76251

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