Its spectral type is DA5.5 and it has a visual magnitude of 11.85,[2] and lies 27.8 light-years (8.5 parsecs) away.
Gliese 318 is a rather young white dwarf with an age estimated to be 590 million years.
[5] Bragaglia et al. suspect this star to be a double white dwarf due to strong spectral line variations.
It is still possible that Gliese 318 is a double white dwarf and additional spectroscopic observations are needed in order to confirm this claim.
[9] Gliese 318 could be the closest double white dwarf to earth.