Omicron Draconis (Latinised as ο Draconis, abbreviated to ο Dra) is a giant star in the constellation Draco located 322.93 light years from the Earth.

This is a single-lined spectroscopic binary system,[7] but the secondary has been detected using interferometry.

It is an RS Canum Venaticorum variable system with eclipses.

Omicron Draconis can be considered the north pole star of Mercury, as it is the closest star to Mercury's north celestial pole.

[10] The pole star status changes periodically, because of the precession of the Moon's rotational axis.