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HD 180187


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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

CCD photometry in the Vilnius photometric systems. II - Analysis of a region in Lyra
Two-dimensional classification of 216 stars down to 17 mag based ontheir seven color photoelectric and CCD photometry in the Vilnius systemis presented. Except for the normal stars, several subdwarfs,metal-deficient giants, and stars of other peculiarities are suspected.Interstellar extinction is determined for normal stars in two areasnorth and south of globular cluster M56, as well as for a 1 sq deg areaaround M56. The mean value of A(v) outside the galactic dust layer isabout 0.75 mag.

Photoelectric Photometry of Stars in the Vilnius System in the Direction of Globular Cluster M56
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Observation and Astrometry data

Constellation:こと座
Right ascension:19h14m21.07s
Declination:+30°21'03.2"
Apparent magnitude:7.823
Distance:386.1 parsecs
Proper motion RA:3
Proper motion Dec:3.4
B-T magnitude:7.858
V-T magnitude:7.826

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 180187
TYCHO-2 2000TYC 2653-2498-1
USNO-A2.0USNO-A2 1200-10878921
HIPHIP 94530

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