The star’s low metallicity and fairly high space velocity suggest that KOI-4878 is older than the Sun.
But I don't know how to calculate an estimation for the age.
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$\begingroup$ You probably want to look if it has been picked up by an asteroseismic survey. Given that its a KOI, this could be true. Ages from asteroseismology are the most accurate ones, particularly that this star is a G4. $\endgroup$ – AtmosphericPrisonEscape Oct 2 '19 at 23:22
