HD 188102

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Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos.
We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.

Interstellar reddening in the direction of the globular cluster M71
Interstellar reddening as a function of distance in the direction of theglobular cluster M71 is determined by two-dimensional quantification of96 arcmin foreground stars observed in the Vilnius photometric system.In concentric areas with the radii 30 arcmin and 10 arcmin centered onthe cluster, the reddening shows the same variations, ranging fromE(B-V) = 0.12 to 0.32. The cluster stars are likely to have variableextinction too, at least in the outer regions of the cluster.

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Ýlgili Baðlantýlar

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Okcuk
Sað Açýklýk:	19^h52^m54.12^s
Yükselim:	+18Â°48'41.8"
Görünürdeki Parlaklýk:	8.32
Uzaklýk:	251.889 parsek
özdevim Sað Açýklýk:	-10.5
özdevim Yükselim:	-25.5
B-T magnitude:	9.848
V-T magnitude:	8.447

Kataloglar ve belirtme:

Özgün isimleri
HD 1989	HD 188102
TYCHO-2 2000	TYC 1624-3003-1
USNO-A2.0	USNO-A2 1050-15402904
HIP	HIP 97840

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