ι Eridani (iota Eridani)

ι Eridani is a hypergiant star in the constellation of Eridanus.

ι Eridani visual magnitude is 4.11. Because of its moderate brightness, ι 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 ι Eridani:

Color of ι Eridani ⬤

Magnitude of ι Eridani 4.11

Class Hypergiant

VISIBILITY RIGHT NOW ι Eridani (iota Eridani) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of ι Eridani

ι Eridani is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ι Eridani are provided in the following table:

Right Ascension J2000 02h 40m 40s

Declination J2000 -39° 51’ 20”

Galactic Longitude 249.3°

Galactic Latitude -64.07°

Constellation Eridanus

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

Finder chart ι Eridani (iota Eridani) star

Simplified finder chart for ι Eridani (iota Eridani).

Visibility of ι Eridani from your location

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

ι Eridani (iota Eridani) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of ι Eridani

The image below is a photograph of ι 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 ι Eridani is 0.138 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of ι Eridani. The red arrow shows the motion of ι Eridani during the next 1000 years (2.30 arcmin in Right Ascension and -0.53 arcmin in declination);

Distance of ι Eridani from the Sun and relative movement

ι Eridani is distant 145.41 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 44.60 pc

Distance (light year) 145.41 ly

Heliocentric radial velocity -9 km/s

Proper Motion RA 0.138 arcsec/year

Proper Motion Dec -0.032 arcsec/year

Spectral properties of ι Eridani

ι Eridani belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.86

Spectral Type K0III

Color Index (B-V) 1.02

Temperature of ι Eridani 4695K

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

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

Alternative designations of ι Eridani

Bayer designation ι Eridani
(iota Eridani)

Henry Draper Catalogue HD16815

SAO Catalogue SAO215999

Hipparcos Catalogue HIP12486

Durchmusterung Catalogue CD-40 689

FK5 Catalogue 1075

In Evidence

Other stars in Eridanus