Principal     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     Astrofotografía     La Colección     Foro     Blog New!     FAQ     Login  
→ Adopt this star  

HD 189589


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.

The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.

Visual polarization measurements in the Cepheus flare
We present polarization measurements on a stellar sample located in alarge area in Cepheus. The observations were made with the 2-m telescopeat the Pic du Midi (France), around 4350 A and with an accuracy of thepolarization degree of the order of 0.0001. At large scales, we findthat the galactic magnetic field as given by the direction of thepolarization (alignment of the dust) is, roughly speaking, parallel tothe galactic plane in the Cassiopeia cloud, with a scale size of theorder of 100 pc, while it is turned by about 90 in the Cepheus cloud. Atsmall scales, in both the Cepheus and the Cassiopeia clouds, the COcontent has little correlation with the degree of polarization.

Yerkes actinometry. Zone +73deg to +90deg.
Not Available

Enviar un nuevo artículo


Enlaces relacionados

  • - No se han encontrado enlaces -
En viar un nuevo enlace


Miembro de los siguientes grupos:


Datos observacionales y astrométricos

Constelación:Dragón
Ascensión Recta:19h51m03.91s
Declinación:+78°37'27.2"
Magnitud Aparente:7.716
Distancia:699.301 parsecs
Movimiento Propio en Ascensión Recta:-5.8
Movimiento Propio en Declinación:-10.9
B-T magnitude:9.99
V-T magnitude:7.904

Catálogos y designaciones:
Nombres Propios
HD 1989HD 189589
TYCHO-2 2000TYC 4588-229-1
USNO-A2.0USNO-A2 1650-02200579
HIPHIP 97678

→ Solicitar más catálogos y designaciones a VizieR