Minataka is a hot, blue O9.5II bright giant with a luminosity maybe 3000 times that of the sun. Burnham describes the star as an eclipsing binary with a period of 5.73 days. He suggests that the two components are nearly equal in size and type. The eclipses produce a light variation of 0.2 magnitudes. Spectral analysis suggests an orbit of small eccentricity with the primary star lying about 5 million miles from the center of mass of the system.
Burnham describes a C component located about 52.8 arc sec from A and B, that is, at a projected distance of about 15,000 AU or about 0.23 ly.
The Hipparcos Catalogue Mission has discovered a D component about 1.35 magnitude dimmer than the primary star and lying at an angular separation of 0.267 arc sec, that is, at a projected distance of about 75 AU or 1.9 times the distance between the sun and planet Pluto.