Here's a bit more information:
* Spectral type: B8 III
* Magnitude: 3.57
* Distance: ~135 light-years
* Mass: About 3.5 times the mass of our Sun
* Luminosity: About 250 times the luminosity of our Sun
It's worth noting that Rukbat is the second brightest star in the constellation Sagittarius, and its name comes from the Arabic word "al-rukbat," meaning "the knee," as it was imagined to be the knee of the archer.