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HD 157359


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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

Über die Veränderlichkeit der Sterne des Spektraltyps A
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Observation and Astrometry data

Constellation:ヘルクレス座
Right ascension:17h21m49.64s
Declination:+23°41'10.7"
Apparent magnitude:7.406
Distance:263.158 parsecs
Proper motion RA:-3.8
Proper motion Dec:2.3
B-T magnitude:7.372
V-T magnitude:7.404

Catalogs and designations:
Proper Names
HD 1989HD 157359
TYCHO-2 2000TYC 2074-1592-1
USNO-A2.0USNO-A2 1125-08196008
HIPHIP 84954

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