The Stars || News || About Stars | Nearest Stars | Big Stars | Special Stars | Exoplanets | Prototype Stars || Constellations || Galaxies || Planets | Moons | Solar System || Convert Values || Stellar Records || Imprint & Privacy

         

Anzeige


EF Eridanus

The brighter, smaller star A of this very close double system is a white dwarf with a magnetic field 14 million times stronger than that of the Sun.
Its partner was 500 million years ago a red dwarf. Since then the white dwarf ceaselessly pulls matter from it and transformed it into a very strange object. It is neither star nor brown dwarf, but a new kind of cosmic objekt. Its surface temperature is merely 1700 kelvin.

Constellation: Eridanus
Distance: 300 light-years
Visual magnitude: 13.7
Orbit period of EF Eridanus A and B: 81 minutes

EF Eridanus A

Mass: 0.6 * Sun
Diameter: circa 0.01 * Sun
 

EF Eridanus B

Mass: 0.05 * Sun
Diameter: circa 0.1 * Sun


Back: List of Special Stars
    EF Eridanus
Graphic: Gemini Observatory/Association of Universities for Research in Astronomy

    Astronomical articles released under Creative Commons: Imprint & Privacy
This site in German: Sterne und Planeten


Anzeige

Astronomy: Stars & Planets | © Jumk.de Webprojects

Images of Chemical Elements