Meissa - λ Orionis (lambda Orionis)
Meissa, also designated as λ Orionis (lambda Orionis), is a variable and multiple giant star in the constellation of Orion.
Meissa visual magnitude is 3.54. Because of its moderate brightness, Meissa should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about Meissa:
Celestial coordinates and finder chart of Meissa
Meissa is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Meissa are provided in the following table:
The simplified sky map below shows the position of Meissa in the sky:
Visibility of Meissa from your location
Digitized Sky Survey image of Meissa
The image below is a photograph of Meissa from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Meissa is 0 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of Meissa from the Sun and relative movement
Meissa is distant 1,055.02 light years from the Sun and it is moving far from the Sun at the speed of 34 kilometers per second.
Spectral properties of Meissa
Meissa belongs to spectral class O8 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Meissa is situated in the Hertzsprung–Russell diagram.
Meissa star system properties
Meissa is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the Meissa double sysyem: