20 Eridani

Altitude: 17.4° Azimuth: 154.1° Direction: South-South-East

20 Eridani is a variable star in the constellation of Eridanus.

20 Eridani visual magnitude is 5.23. Because of its reltive faintness, 20 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 20 Eridani:

Color of 20 Eridani ⬤

Magnitude of 20 Eridani 5.23

Class

VISIBILITY RIGHT NOW

20 Eridani is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 17.4°
Azimuth: 154.1°
Direction: South-South-East

Celestial coordinates and finder chart of 20 Eridani

20 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 20 Eridani are provided in the following table:

Right Ascension J2000 03h 36m 17s

Declination J2000 -17° 28’ 00”

Galactic Longitude 207.47°

Galactic Latitude -50.85°

Constellation Eridanus

The simplified sky map below shows the position of 20 Eridani in the sky:

Simplified finder chart for 20 Eridani.

Visibility of 20 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 20 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: 107.5° RISE 18:36

Max altitude: 21.1° TRANSIT 23:02

Azimuth: 252.5° SET 3:31

Digitized Sky Survey image of 20 Eridani

The image below is a photograph of 20 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 20 Eridani is 0.029 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 20 Eridani. The red arrow shows the motion of 20 Eridani during the next 10000 years (4.83 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 20 Eridani from the Sun and relative movement

20 Eridani is distant 473.15 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

Distance (parsec) 145.14 pc

Distance (light year) 473.15 ly

Heliocentric radial velocity 14 km/s

Proper Motion RA 0.029 arcsec/year

Proper Motion Dec -0.01 arcsec/year

Spectral properties of 20 Eridani

20 Eridani belongs to spectral class B9

Absolute magnitude -0.58

Spectral Type B9

Color Index (B-V) -0.13

Temperature of 20 Eridani 12103K

The red dot in the diagram below shows where 20 Eridani is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 20 Eridani. Attribution: Richard Powell / CC BY-SA

Alternative designations of 20 Eridani

Flamsteed designation 20 Eridani

Henry Draper Catalogue HD22470

SAO Catalogue SAO149063

Hipparcos Catalogue HIP16803

Durchmusterung Catalogue BD-17 699

FK5 Catalogue 1100

General Catalogue of Variable Stars EG Eri

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In Evidence

Other stars in Eridanus