Delta Scorpii

Delta Scorpii (δ Sco, δ Scorpii) is a star in the constellation Scorpius. It has the traditional name Dschubba (or Dzuba, from Arabic jabhat, "forehead" (of the scorpion) or also Iclarcrau or Iclarkrav.

Because Delta Scorpii is near the ecliptic it is occasionally occulted by the Moon, or (extremely rarely) by planets.

Delta Scorpii is a proper motion member of the Upper Scorpius subgroup of the Scorpius-Centaurus OB association, the nearest such co-moving association of massive stars to the Sun.. The Upper Scorpius subgroup contains thousands of young stars with mean age 11 million years at average distance of 470 light years (145 parsecs). A recent analysis of the HR diagram position for Delta Scorpii estimates its effective temperature to be 27,400 Kelvin with a luminosity of 38,000 Suns, consistent with an isochronal age of 9-10 million years and an estimated mass of 14.6-14.9 solar masses.