22 Eridani

Altitude: -38.5° Azimuth: 324.4° Direction: North-West

22 Eridani is a giant star in the constellation of Eridanus.

22 Eridani visual magnitude is 5.53. Because of its reltive faintness, 22 Eridani should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 22 Eridani:

Color of 22 Eridani ⬤

Magnitude of 22 Eridani 5.53

Class Giant

VISIBILITY RIGHT NOW

22 Eridani is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -38.5°
Azimuth: 324.4°
Direction: North-West

Celestial coordinates and finder chart of 22 Eridani

22 Eridani 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 Eridani are provided in the following table:

Right Ascension J2000 03h 40m 38s

Declination J2000 -05° 12’ 38”

Galactic Longitude 192.1°

Galactic Latitude -44.18°

Constellation Eridanus

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

Simplified finder chart for 22 Eridani.

Visibility of 22 Eridani 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 Eridani 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: 95.2° RISE 22:26

Max altitude: 33.3° TRANSIT 4:02

Azimuth: 264.8° SET 9:34

Digitized Sky Survey image of 22 Eridani

The image below is a photograph of 22 Eridani 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 Eridani is -0.003 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 Eridani. The red arrow shows the motion of 22 Eridani during the next 100000 years (-5.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 22 Eridani from the Sun and relative movement

22 Eridani is distant 739.23 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.

Distance (parsec) 226.76 pc

Distance (light year) 739.23 ly

Heliocentric radial velocity 16 km/s

Proper Motion RA -0.003 arcsec/year

Proper Motion Dec -0.001 arcsec/year

Spectral properties of 22 Eridani

22 Eridani belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star. 22 Eridani is also a Si chemically peculiar star.

Absolute magnitude -1.25

Spectral Type B9III

Color Index (B-V) -0.15

Temperature of 22 Eridani 12489K

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

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

Alternative designations of 22 Eridani

Flamsteed designation 22 Eridani

Henry Draper Catalogue HD22920

SAO Catalogue SAO130652

Hipparcos Catalogue HIP17167

Durchmusterung Catalogue BD-05 715

FK5 Catalogue 2260

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In Evidence

Other stars in Eridanus