G 240-72
G 240-72 is a nearby degenerate star of spectral class DQP9.0, located 20.3 light-years away in the constellation Draco.
Distance
G 240-72 is the seventh closest white dwarf. Its trigonometric parallax, as measured by the Gaia space telescope, is, corresponding to a distance of.Properties
G 240-72 has a mass of 0.81 Solar masses and surface gravity 108.36 cm·s−2, or approximately 234 000 of Earth's, corresponding to a radius 6850 km, or 107% of Earth's.This white dwarf has a relatively low temperature of 5590 K, and an old cooling age, i.e. the age as a degenerate star of 5.69 Gyr. It has a white appearance, due to its similar temperature to the Sun. It has a pure helium atmosphere and rotates very slowly, with period of possibly over 100 years.