ζ Orionis (zeta Orionis)
ζ Orionis is a variable and multiple hypergiant star in the constellation of Orion.
ζ Orionis visual magnitude is 4.21. Because of its moderate brightness, ζ Orionis should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
The proper motion of ζ Orionis is 0.004 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Key facts about ζ Orionis
Celestial coordinates and finder chart of ζ Orionis
ζ Orionis 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 ζ Orionis are provided in the following table:
The simplified sky map below shows the position of ζ Orionis in the sky:
Visibility of ζ Orionis from your location
Today's ζ Orionis (zeta Orionis) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Spectral properties of ζ Orionis
ζ Orionis belongs to spectral class B0 and has a luminosity class of III corresponding to a hypergiant star.
ζ Orionis star system properties
ζ Orionis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the ζ Orionis double sysyem: