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

         


Rotanev

Rotanev, the brightest star in Delphinus, although called Beta Delphini, is a double star of two similar yellow subgiants, which have left the main sequence not a long time ago. The slightly bigger A star is in its evolutionary state further as the B star and has catched up with this in spectral class on its way to become a red giant.

Constellation: Delphinus
Distance: 97 light-years
Space between Rotanev A and B: 8 - 18 AU
Orbit period of Rotanev A and B: 26.7 years

Rotanev A

Spectral class: F5
Visual magnitude: 4.0
Luminosity: 18 * Sun
Mass: circa 2 * Sun
 

Rotanev B

Spectral class: F5
Visual magnitude: 4.9
Luminosity: 8 * Sun
Mass: < 2 * Sun

Back: List of Special Stars

03/07/2006

    Rotanev
Photo: Starfire Optical Range Mission

    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