ω Eridani (omega Eridani)

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

ω Eridani visual magnitude is 4.39. Because of its moderate brightness, ω Eridani 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 ω Eridani:

Color of ω Eridani ⬤

Magnitude of ω Eridani 4.39

Class Giant

VISIBILITY RIGHT NOW ω Eridani (omega Eridani) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 20°.

Celestial coordinates and finder chart of ω Eridani

ω 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 ω Eridani are provided in the following table:

Right Ascension J2000 04h 52m 53s

Declination J2000 -05° 27’ 10”

Galactic Longitude 203.75°

Galactic Latitude -28.78°

Constellation Eridanus

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

Finder chart ω Eridani (omega Eridani) star

Simplified finder chart for ω Eridani (omega Eridani).

Visibility of ω Eridani from your location

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

Today's ω Eridani (omega Eridani) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.5° RISE 11:14

Max altitude: 33.1° TRANSIT 16:45

Azimuth: 264.5° SET 22:15

RIGHT NOW ω Eridani (omega Eridani) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ω Eridani

The image below is a photograph of ω 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 ω Eridani is -0.023 arcsec per year in Right Ascension and 0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of ω Eridani. The red arrow shows the motion of ω Eridani during the next 10000 years (-3.83 arcmin in Right Ascension and 3.50 arcmin in declination);

Distance of ω Eridani from the Sun and relative movement

ω Eridani is distant 226.55 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 69.49 pc

Distance (light year) 226.55 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.023 arcsec/year

Proper Motion Dec 0.021 arcsec/year

Spectral properties of ω Eridani

ω Eridani belongs to spectral class F4 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.18

Spectral Type F4III

Color Index (B-V) 0.25

Temperature of ω Eridani 7795K

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

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

Alternative designations of ω Eridani

Bayer designation ω Eridani
(omega Eridani)

Flamsteed designation 61 Eridani

Henry Draper Catalogue HD31109

SAO Catalogue SAO131568

Hipparcos Catalogue HIP22701

Durchmusterung Catalogue BD-05 1068

FK5 Catalogue 2366

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Other stars in Eridanus