Tags: Star.
Tycho G is the surviving binary companion star of the SN 1572 supernova event.The star is located about 7500 light-years away in the constellation Cassiopeia. It is a subgiant similar to our Sun in luminosity and color but more evolved.Tycho G is still close to the center of the supernova remnant and had triggered once the explosion of its binary companion white dwarf star by contributing mass to it.