HD 13892

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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.

2000 A UV imaging of a 6 deg diameter field around the H and Chi Persei double cluster
A stellar field centered close to the h and Chi per double cluster hasbeen observed at 2000 A by the stratospheric balloon-born telescope ofthe SCAP-2000 program. It is shown that the prevailing extinction lawproduces greater extinction at 1965 A than is predicted by the meanextinction law. The results suggest the presence of an H2 cloud in frontof h and Chi Per in the second absorbing layer and in the local arm. Agroup of hot stars centered at the same distance as the molecular cloudmay form an association of OB stars in the local arm.

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Osservazione e dati astrometrici

Costellazione:	Perseo
Ascensione retta:	02^h16^m55.33^s
Declinazione:	+53Â°27'59.1"
Magnitudine apparente:	8.989
Distanza:	1694.915 parsec
Moto proprio RA:	4.4
Moto proprio Dec:	-19.5
B-T magnitude:	9.113
V-T magnitude:	9

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 13892
TYCHO-2 2000	TYC 3686-2202-1
USNO-A2.0	USNO-A2 1425-03191951
HIP	HIP 10636

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