ο2 Orionis (omicron2 Orionis)
ο2 Orionis is a multiple giant star in the constellation of Orion.
ο2 Orionis visual magnitude is 4.07. Because of its moderate brightness, ο2 Orionis 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 ο2 Orionis:
Celestial coordinates and finder chart of ο2 Orionis
ο2 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 ο2 Orionis are provided in the following table:
The simplified sky map below shows the position of ο2 Orionis in the sky:
Visibility of ο2 Orionis from your location
Digitized Sky Survey image of ο2 Orionis
The image below is a photograph of ο2 Orionis 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 ο2 Orionis is -0.074 arcsec per year in Right Ascension and -0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of ο2 Orionis from the Sun and relative movement
ο2 Orionis is distant 169.26 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.
Spectral properties of ο2 Orionis
ο2 Orionis belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where ο2 Orionis is situated in the Hertzsprung–Russell diagram.
ο2 Orionis star system properties
ο2 Orionis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the ο2 Orionis double sysyem: