Lambda Scorpii

From Freepedia

**λ Scorpii**
Epoch J2000.0
Constellation	Scorpius
Right ascension	17^h 33^m 36.5^s
Declination	-37° 06' 14"
Distance	703 ± 136 ly (216 ± 42 pc)
Spectral type	B1.5IV
Apparent magnitude	1.62
Other designations
Shaula, 35 Scorpii, HD 158926, HIP 85927, CCDM 17336-3706

Lambda Scorpii (λ Sco / λ Scorpii) is the second brightest star system in the constellation Scorpius, and one of the brightest stars in the nighttime sky. It has the Bayer designation "lambda" despite being the second brightest in its constellation. It also has the traditional name Shaula, which comes from the Arabic الشولاء aš-šawlā´ meaning the raised [tail], as it is found in the tail of the scorpion (Scorpius).

Lambda Scorpii is a triple star system. The primary, Lambda Scorpii A, is a B-type subgiant. Orbiting it is the 15th magnitude Lambda Scorpii B with a separation of 42 arcseconds from the primary, putting it at least 3500 Astronomical Units (AU) from the primary. The second companion is the 12th magnitude Lambda Scorpii C, which is 95 arcseconds, or at least 8000 AU (0.13 light years), from the primary.