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HD 3925


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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

Flux Distributions for 59 Stars in Cygnus
Absolute flux distributions are given for 59 Cygnus stars in thespectral range of 320--720 nm with a step of 5 nm. Their rms errors areon the average 2--4%. The synthetic color indices calculated for theflux distributions are compared with the observed color indices in threephotometric systems.

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观测天体数据

星座:仙女座
右阿森松:00h42m04.73s
赤纬:+32°36'39.7"
视星:7.66
距离:350.877 天文距离
右阿森松适当运动:12.6
赤纬适当运动:-1.9
B-T magnitude:7.667
V-T magnitude:7.661

目录:
适当名称   (Edit)
HD 1989HD 3925
TYCHO-2 2000TYC 2279-394-1
USNO-A2.0USNO-A2 1200-00304098
HIPHIP 3301

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