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HD 104788


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UvbyHbeta_ photometry of main sequence A type stars.
We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.

Hyades and Sirius supercluster members brighter than magnitude (V) 7.1. II - Right ascension six to twelve hours
The present star sample is contained in the Bright Star Catalogue andits Supplement, augmented with a further supplement of 788 stars foundduring various observing programs over the past 40 years. Accurate,four-color and H-beta, or (RI), photometry is available for most of thesupercluster members. The criteria for membership are the comparisons ofthe proper motion, radial velocity, and luminosity obtained from thesupercluster parameters with the observed motions and the luminosityderived from the photometric parameters. New proper motions, based onall available catalogs, have been derived for the additional 788 starsdiscussed here, as well as all supercluster members.

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Datos observacionales y astrométricos

Constelación:Virgo
Ascensión Recta:12h04m00.34s
Declinación:-10°17'46.1"
Magnitud Aparente:6.596
Distancia:115.741 parsecs
Movimiento Propio en Ascensión Recta:-14.2
Movimiento Propio en Declinación:10.3
B-T magnitude:6.962
V-T magnitude:6.627

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 104788
TYCHO-2 2000TYC 5521-1365-1
USNO-A2.0USNO-A2 0750-07733990
HIPHIP 58830

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