HD 149837

HD 149837 is a binary star in the southern constellation of Ara. Parallax measurements give a distance of 103.9 light-years.
The components of this system have an estimated separation of 45.8 astronomical units. The primary, of apparent magnitude +6.24, can be viewed to the naked eye only from sufficiently dark skies, far from light pollution. Its spectrum mathces a class of F6V, making it a F-type main-sequence star. Around 1.25 times more massive than the Sun and 2.9 billion years old, it has 1.35 times the Sun's radius and irradiates 2.6 times the Sun's luminosity from its photosphere at an effective temperature of 6,401 K.
The secondary's apparent magnitude is 8.98, too faint to be viewed with the naked eye. It has 0.79 times the mass of the Sun, 0.67 times the radius and irradiates 25% of its luminosity at an effective temperature of 4,987 K.