# Meissa
Who / What
**Meissa**, designated **Lambda Orionis (λ Orionis)**, is a prominent star located in the constellation Orion. It is part of a multiple-star system, consisting primarily of an O9 giant and a B-class main sequence star, separated by about 4 arcseconds.
---
Background & History
Meissa is not an organization but a celestial object—specifically, a notable star within the Orion constellation. Its classification as a multiple star dates back to astronomical observations that identified its distinct components. While historically significant in stargazing and astronomy, it has no known historical origins or founding events tied to human activity.
---
Why Notable
Meissa stands out due to its brightness (apparent magnitude of 3.33) and its role as a key reference point in the Orion constellation. Its classification as an O9 giant makes it one of the hottest and most luminous stars visible from Earth, contributing to its prominence in both amateur astronomy and professional studies of stellar evolution.
---
In the News
As of current astronomical records, Meissa remains a static celestial object with no recent news coverage. Its significance lies primarily in ongoing research into multiple-star systems and the properties of O-type giants, which continue to fascinate scientists studying stellar dynamics and cosmic distances.
---
Key Facts
---