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HD 142653


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Vitesses radiales, éléments orbitaux et modèles pour 25 systèmes doubles spectroscopiques
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SB9: The ninth catalogue of spectroscopic binary orbits
The Ninth Catalogue of Spectroscopic Binary Orbits(http://sb9.astro.ulb.ac.be) continues the series of compilations ofspectroscopic orbits carried out over the past 35 years by Batten andcollaborators. As of 2004 May 1st, the new Catalogue holds orbits for2386 systems. Some essential differences between this catalogue and itspredecessors are outlined and three straightforward applications arepresented: (1) completeness assessment: period distribution of SB1s andSB2s; (2) shortest periods across the H-R diagram; (3)period-eccentricity relation.

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.

The general catalogue of trigonometric [stellar] paralaxes
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Locations of the components of triple star systems north of +70 deg
Micrometric measurements of triple systems north of +70 deg declinationwere made with the 10.5-inch Fraunhofer refractor of Munich UniversityObservatory. Absolute positions of all measured components were derivedby using the positions of the main stars as given in the catalog AGK3and, in some cases, also in the SAO-catalog.

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Datos observacionales y astrométricos

Constelación:Osa Menor
Ascensión Recta:15h43m22.27s
Declinación:+81°19'10.0"
Magnitud Aparente:8.321
Distancia:128.535 parsecs
Movimiento Propio en Ascensión Recta:-92.1
Movimiento Propio en Declinación:64.6
B-T magnitude:8.908
V-T magnitude:8.37

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 142653
TYCHO-2 2000TYC 4566-614-1
USNO-A2.0USNO-A2 1650-01803728
HIPHIP 77002

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