δ Eridani (delta Eridani)

δ Eridani is a variable hypergiant star in the constellation of Eridanus.

δ Eridani visual magnitude is 3.54. Because of its moderate brightness, δ 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 δ Eridani:

Color of δ Eridani ⬤

Magnitude of δ Eridani 3.54

Class Hypergiant

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

Celestial coordinates and finder chart of δ Eridani

δ 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 δ Eridani are provided in the following table:

Right Ascension J2000 03h 43m 14s

Declination J2000 -09° 45’ 47”

Galactic Longitude 198.1°

Galactic Latitude -46°

Constellation Eridanus

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

Finder chart δ Eridani (delta Eridani) star

Simplified finder chart for δ Eridani (delta Eridani).

Visibility of δ 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 δ Eridani (delta 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: 99.8° RISE 7:11

Max altitude: 28.8° TRANSIT 12:20

Azimuth: 260.2° SET 17:28

RIGHT NOW δ Eridani (delta Eridani) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of δ Eridani

The image below is a photograph of δ 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 δ Eridani is -0.092 arcsec per year in Right Ascension and 0.745 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of δ Eridani. The red arrow shows the motion of δ Eridani during the next 1000 years (-1.53 arcmin in Right Ascension and 12.42 arcmin in declination);

Distance of δ Eridani from the Sun and relative movement

δ Eridani is distant 29.48 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 9.04 pc

Distance (light year) 29.48 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.092 arcsec/year

Proper Motion Dec 0.745 arcsec/year

Spectral properties of δ Eridani

δ Eridani belongs to spectral class K0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude 3.76

Spectral Type K0IV

Color Index (B-V) 0.92

Temperature of δ Eridani 4943K

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

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

Alternative designations of δ Eridani

Bayer designation δ Eridani
(delta Eridani)

Flamsteed designation 23 Eridani

Henry Draper Catalogue HD23249

SAO Catalogue SAO130686

Hipparcos Catalogue HIP17378

Durchmusterung Catalogue BD-10 728

Gliese Catalogue Gl 150

FK5 Catalogue 135

General Catalogue of Variable Stars Del Eri

In Evidence

Other stars in Eridanus