hip-30247

Its story

45 Aurigae sits 193 light-years away, within the figure of the Charioteer of the northern winter sky. What looks like a single yellow-white point is in fact a tight spectroscopic binary: two stars complete a circular orbit in just 6.5 days, far too close to be split apart with any telescope. The visible primary, of class F, is slightly heavier and far more luminous than the Sun, a steady fire over a billion years old.