HD 125040

HD 125040 is a visual binary star system in the northern constellation of Boötes. It appears as a dim point of light near the lower limit of perception with the naked eye, having a combined apparent visual magnitude of 6.25. The system is located at a distance of approximately 106 light years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −7 km/s. It has a high proper motion, traversing the celestial sphere at an angular rate of $−7.20$.

This was first reported to be a double by J. F. W. Herschel in 1830. The stars orbit each other with a semi-major axis of $−135.85$, a period of roughly 956.6 years, and an eccentricity of 0.53. They have a combined mass about double that of the Sun. The primary component is an F-type main-sequence star with a stellar classification of F8V. The system is a source for X-ray emission.