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

GJ 436

This red dwarf has two known planets. The Neptune-sized GJ 436b, orbiting the star every 2.64 days in a distance of 0.029 AU, has 0.072 times the mass of Jupiter and 0.38 times its diameter. Whereas GJ 436c, discovered in April 2008, orbits every 5.2 days, it has about five times the mass of Earth and 1.5 times its diameter and so is one of the smallest exoplanets found to date.

Constellation: Leo
Age: 6 billion years
Distance: 33 light-years
Spectral class: M2.5
Visual magnitude: 10.68
Mass: 0.45 * Sun
Diameter: 0.46 * Sun

Back: List of Exoplanets

04/10/2008

     GJ 436
Photo: ESO Online Digitized Sky Survey
    Astronomical articles released under Creative Commons: Imprint & Privacy
This site in German: Sterne und Planeten


Astronomy: Stars & Planets | © Jumk.de Webprojects

Images of Chemical Elements