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



Tau1 Gruis

The yellow star slowly turns into a subgiant. It is orbited every 3.95 years by a planet with at least 1.49 times the mass of Jupiter in a distance of 1.8 - 3.6 AU. This was the 100th exoplanet to be discovered.

If despite the excentric orbit life evolved on the (likely) moons of the planet, it will now get in deep trouble due to the expansion of the star and the accompanied rise in temperature.

Constellation: Grus
Age: 5 billion years
Distance: 109 light-years
Spectral class: G0 - G3
Visual magnitude: 6.03
Luminosity: 3.6 * Sun
Mass: 1.25 * Sun
Diameter: 2.02 * Sun

Back: List of Exoplanets
    Tau1 Gruis
Graphic: PPARC, David A. Hardy

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

Astronomy: Stars & Planets | © Webprojects

Images of Chemical Elements