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HD 183240


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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

N-Vulpeculae 1984 Behaviour Near Maximum
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Observation and Astrometry data

Constellation:Cygnus
Right ascension:19h27m22.69s
Declination:+30°25'26.1"
Apparent magnitude:8.398
Distance:411.523 parsecs
Proper motion RA:6.1
Proper motion Dec:5.3
B-T magnitude:8.318
V-T magnitude:8.392

Catalogs and designations:
Proper Names
HD 1989HD 183240
TYCHO-2 2000TYC 2654-581-1
USNO-A2.0USNO-A2 1200-11624488
HIPHIP 95650

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