PX158 - K2 - the age of the universe

t_{0} = \frac{d}{v} = \frac{1}{H_{0}}

t_{0} \approx 13.6 G y r

a more precise calculation, which uses the cosmological evolution model, can be made that allows $H_{0}$ to vary in time:

t_{0} \approx 13.8 G y r