136 Tauri

136 Tauri is a white-hued binary star system in the zodiac constellation of Taurus. It has a combined apparent visual magnitude of 4.56, which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of $−0.008$ as seen from Earth's orbit, it is located approximately 420 light years from the Sun. The system is moving nearer with a heliocentric radial velocity of −17.2 km/s, and is expected to make its closest approach in 6.5 million years at a distance of 45 pc.

This is a close, double-lined spectroscopic binary with an orbital period of 5.96 days and an eccentricity of 0.00. Tidal effects between the pair may have circularized their orbit and slowed their rotation rates – the primary has a projected rotational velocity of 10 km/s. They have a combined stellar classification of A0 V, and both are most likely A-type main-sequence stars of the same class.