χ1 Orionis (chi1 Orionis)

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:

Color of χ1 Orionis ⬤

Magnitude of χ1 Orionis 4.41

Class Hypergiant

VISIBILITY RIGHT NOW χ1 Orionis (chi1 Orionis) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 50°.

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:

Right Ascension J2000 05h 54m 22s

Declination J2000 +20° 16’ 33”

Galactic Longitude 188.46°

Galactic Latitude -2.73°

Constellation Orion

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° RISE 6:35

Max altitude: 58.8° TRANSIT 14:23

Azimuth: 290.3° SET 22:11

RIGHT NOW χ1 Orionis (chi1 Orionis) is above the horizon from Greenwich, United Kingdom

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.

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.

Distance (parsec) 8.66 pc

Distance (light year) 28.24 ly

Heliocentric radial velocity -14 km/s

Proper Motion RA -0.189 arcsec/year

Proper Motion Dec -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.

Absolute magnitude 4.72

Spectral Type G0V

Color Index (B-V) 0.59

Temperature of χ1 Orionis 6007K

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

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

Alternative designations of χ1 Orionis

Bayer designation χ1 Orionis
(chi1 Orionis)

Flamsteed designation 54 Orionis

Henry Draper Catalogue HD39587

SAO Catalogue SAO77705

Hipparcos Catalogue HIP27913

Durchmusterung Catalogue BD+20 1162

Gliese Catalogue Gl 222 A

In Evidence

Other stars in Orion