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HD 155980


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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

Positions et Mouvements propres de 357 Etoiles de Repère de la Zone + 16° à + 18° pour l'époque et l'équinoxe 1950,0
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Observation and Astrometry data

Constellation:Ηρακλής
Right ascension:17h14m17.71s
Declination:+17°05'04.5"
Apparent magnitude:8.069
Distance:223.714 parsecs
Proper motion RA:-4.2
Proper motion Dec:-13.6
B-T magnitude:8.055
V-T magnitude:8.068

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 155980
TYCHO-2 2000TYC 1540-2027-1
USNO-A2.0USNO-A2 1050-08484642
HIPHIP 84321

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