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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Orion » 

χ1 Orionis (chi1 Orionis)

Altitude: 4.3°   Azimuth: 62.4°   Direction: East-North-East

χ1 Orionis is a multiple hypergiant star in the constellation of Orion.

χ1 Orionis visual magnitude is 4.41. Because of its moderate brightness, χ1 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 χ1 Orionis:


χ1 Orionis (chi1 Orionis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.3°
Azimuth: 62.4°
Direction: East-North-East

Celestial coordinates and finder chart of χ1 Orionis

χ1 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 χ1 Orionis are provided in the following table:

05h 54m 22s
+20° 16’ 33”

The simplified sky map below shows the position of χ1 Orionis in the sky:

Finder chart χ1 Orionis (chi1 Orionis) star
Simplified finder chart for χ1 Orionis (chi1 Orionis).

Visibility of χ1 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 χ1 Orionis (chi1 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: 69.7°
Max altitude: 58.8°
Azimuth: 290.3°

Digitized Sky Survey image of χ1 Orionis

The image below is a photograph of χ1 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 χ1 Orionis is -0.189 arcsec per year in Right Ascension and -0.084 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of χ1 Orionis (chi1 Orionis) star
DSS2 image of χ1 Orionis. The red arrow shows the motion of χ1 Orionis during the next 1000 years (-3.15 arcmin in Right Ascension and -1.40 arcmin in declination);

Distance of χ1 Orionis from the Sun and relative movement

χ1 Orionis is distant 28.24 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

8.66 pc
28.24 ly
-14 km/s
-0.189 arcsec/year
-0.084 arcsec/year

Spectral properties of χ1 Orionis

χ1 Orionis belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where χ1 Orionis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of χ1 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of χ1 Orionis

χ1 Orionis
(chi1 Orionis)
Gl 222 A