Meissa
Meissa (Lambda Orionis, λ Ori) is a star in the constellation Orion. "Meissa" derives from the Arabic "Al-Maisan" which means "The Shining One". This term was used for Gamma Gemini (Alhena), but was somehow also mistakenly applied to Meissa and the name stuck. The original Arabic name for this star, "Al Hakah" (the source for another name for it, "Heka") refers to the Arabic lunar mansion that includes this star and the two of φ Ori (Al Haḳʽah, "a White Spot").
In Chinese, 觜宿 (Zī Sù), meaning Turtle Beak (asterism), refers to an asterism consisting of Meissa and both of φ Ori Consequently, Meissa itself is known as 觜宿一 (Zī Sù yī, English: the First Star of Turtle Beak.)
Meissa is a giant star with a stellar classification of O8 III and an apparent visible magnitude 3.54. It is an enormous star with about 28 times the mass of the Sun and 10 times the Sun's radius. The outer atmosphere has an effective temperature of around 35,000 K, giving it the characteristic blue glow of a hot O-type star. Meissa is a soft X-ray source with a luminosity of 1032 erg s−1 and peak emission in the energy range of 0.2–0.3 keV, which suggests the X-rays are probably being generated by the stellar wind.