54 Eridani

Below the horizon. Rise: 9:31 | Tran: 13:43 | Set: 17:56

Alt: -18.31° Az: 98.75° Direction: East

54 Eridani is a variable and double giant star of spectral class M4 in the constellation of Eridanus.

54 Eridani visual magnitude is 4.32. Because of its moderate brightness, 54 Eridani is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 54 Eridani. The red arrow shows the motion of 54 Eridani during the next 1000 years (0.35 arcmin in Right Ascension and -1.60 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 04h 41m 33s

Declination -19° 37’ 26”

Hour Angle 17h 39m 51s

Sidereal Time 22h 21m 24s

J2000

Right Ascension 04h 40m 26s

Declination -19° 40’ 18”

Galactic Coordinates

Galactic Longitude 217.79°

Galactic Latitude -37.36°

Finder Chart

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Finder chart for 54 Eridani.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.32

Class Giant

Absolute magnitude -0.90

Spectral Type M4III

Color Index (B-V) 1.61

Temperature 3635K

The red dot in the diagram below shows where 54 Eridani is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 54 Eridani. Attribution: Richard Powell / CC BY-SA

Star System Properties

54 Eridani is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 54 Eridani double sysyem:

Main star magnitude 4.32

Secondary star magnitude 4.62

Magnitude difference 0.3

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

54 Eridani is distant 361.02 light years from the Sun and it is moving towards the Sun at the speed of 33 kilometers per second.

Distance (parsec) 110.74

Distance (light year) 361.02

Radial Speed -33 km/s

Proper Motion RA 0.021 arcsec/y

Proper Motion Dec -0.096"/y

Alternative Designations

Flamsteed designation 54 Eridani

Henry Draper Catalogue HD29755

SAO Catalogue SAO149818

Hipparcos Catalogue HIP21763

Durchmusterung Catalogue BD-19 988

General Catalogue of Variable Stars DM Eri

Aitken Double Star Catalogue ADS3380

Visibility from Your Location

Today's 54 Eridani rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 109.6° RISE 9:31

Max altitude: 18.9° TRANSIT 13:43

Azimuth: 250.4° SET 17:56

Set Location

Other stars in Eridanus