Theta Aquilae, also named Antinous, is a binary star in the equatorial constellation Aquila. Its identifier is a Bayer designation that is Latinized from θ Aquilae, and abbreviated Theta Aql or θ Aql. The combined apparent visual magnitude of the pair is 3.26, making it the fourth-brightest member of the constellation. This distance to this system can be determined through the parallax technique, yielding an estimate of roughly 286 light-years from Earth. It is drifting closer with a heliocentric radial velocity of −27 km/s.