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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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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
| Micrometer Measures of Double Stars
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| A preliminary compilation of DS-programme star positions
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| Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.
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Observation and Astrometry data
| Constellation: | Herkules |
| Right ascension: | 18h04m56.93s |
| Declination: | +48°08'09.8" |
| Apparent magnitude: | 7.604 |
| Distance: | 114.416 parsecs |
| Proper motion RA: | 4.1 |
| Proper motion Dec: | 6.5 |
| B-T magnitude: | 7.877 |
| V-T magnitude: | 7.627 |
Catalogs and designations:
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