It is around 1.9 times as massive as the Sun and has swollen to around 10 times its diameter and 45 times its luminosity .
In reality it is a giant star that has cooled and expanded off the main sequence after exhausting its core hydrogen supply .
It is around 1.9 times as massive as the Sun and has swollen to around 10 times star 's diameter and 45 times its luminosity .
In reality it is a giant star that has cooled and expanded off the main sequence after exhausting its core hydrogen supply .