When a star that is much more massive than out sun gets to the end of it's like it explodes into a Super Nova. A Super Nova can outshine and entire galaxy and radiate stellar matter at speeds up to 10% the speed of light. This particular Super Nova was given the name SN 1572. SN 1572 is also known as Tycho's Supernova, Tycho's Nova, "B Cassiopeiae" (B Cas), or 3C 10. This Super Nova is located in the constellation Cassiopeia. It is one of one of about eight supernovae visible to the naked eye in historical records. It burst forth in early November 1572 and was independently discovered by many individuals.
The star, HD 162826, was identified by Ivan Ramirez and his team at the University of Texas at Austin. It's located 110 light-years away in the constellation Hercules, is about 15% more massive than our sun, and is not visible to the naked eye.
Ramirez's team was able to match this star to our own by following up on 30 possible candidates. The astronomers used high-resolution spectroscopy to get a better understanding of the chemical make-up of these stars. In addition, they analyzed the orbits of these candidates, namely where they have been and where they are going in the paths around the center of the Milky Way.