22 Orionis

22 Orionis is a sub-giant star in the constellation of Orion.

22 Orionis visual magnitude is 4.73. Because of its moderate brightness, 22 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 22 Orionis:

Color of 22 Orionis ⬤

Magnitude of 22 Orionis 4.73

Class Sub-giant

VISIBILITY RIGHT NOW 22 Orionis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of 22 Orionis

22 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 22 Orionis are provided in the following table:

Right Ascension J2000 05h 21m 45s

Declination J2000 -00° 22’ 57”

Galactic Longitude 202.63°

Galactic Latitude -20.03°

Constellation Orion

The simplified sky map below shows the position of 22 Orionis in the sky:

Simplified finder chart for 22 Orionis.

Visibility of 22 Orionis from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 22 Orionis rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 90.4° RISE 7:54

Max altitude: 38.1° TRANSIT 13:50

Azimuth: 269.6° SET 19:46

RIGHT NOW 22 Orionis is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 22 Orionis

The image below is a photograph of 22 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 22 Orionis is 0 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 22 Orionis. The red arrow shows the motion of 22 Orionis during the next 100000 years (0.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 22 Orionis from the Sun and relative movement

22 Orionis is distant 1,288.54 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

Distance (parsec) 395.26 pc

Distance (light year) 1,288.54 ly

Heliocentric radial velocity 29 km/s

Proper Motion Dec -0.001 arcsec/year

Spectral properties of 22 Orionis

22 Orionis belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -3.25

Spectral Type B2IV

Color Index (B-V) -0.17

Temperature of 22 Orionis 12902K

The red dot in the diagram below shows where 22 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 22 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 22 Orionis

Flamsteed designation 22 Orionis

Henry Draper Catalogue HD35039

SAO Catalogue SAO132028

Hipparcos Catalogue HIP25044

Durchmusterung Catalogue BD-00 930

FK5 Catalogue 1147

In Evidence

Other stars in Orion