HIP 13044 [SEP] constellation
HIP 13044
HIP 13044 is a red horizontal-branch star about 2,300 light years (700 pc) from Earth in the constellation Fornax. The star is part of the Helmi stream, a former dwarf galaxy that merged with the Milky Way between six and nine billion years ago. As a result, HIP 13044 circles the galactic center at a highly irregular orbit with respect to the galactic plane. HIP 13044 is slightly less massive than the Sun, but is approximately seven times its size. The star, which is estimated
ago. The star itself is estimated to be at least nine billion years old.
HIP 13044 is fairly evolved star fusing helium in its core, and has therefore already passed the red-giant phase of its evolution. It lies near the blue end of the red horizontal branch bordering the instability strip. Its surface temperature is about 6025 K and its radius is approximately 6.7 solar radii. HIP 13044's mass is estimated to be 0.8 solar masses. Having a rotation period of 5–6 days, HIP 13044 is a