HD 137388


HD 137388, named Karaka, is a class K2IV star in the constellation Apus. Its apparent magnitude is 8.70 and it is approximately 132 light years away based on parallax.
It has a surface temperature of and is 58% as luminous and 93% as massive as the Sun, with 86% of its diameter, and is thought to be around 2.99 billion years old.

Name

HD 137388 was given the proper name Karaka by representatives of New Zealand in the IAU's NameExoWorlds contest, after the native New Zealand karaka tree.

Planetary system

Radial velocity studies indicate that it has a planet, originally named HD 137388 b. It orbits at an average distance of 0.89 AU. The planet was officially designated Kererū, the Māori name of the New Zealand pigeon, by the IAU in the same contest that named its parent star.