55 Eridani

Altitude: -17.5° Azimuth: 277.9° Direction: West

55 Eridani is a double giant star in the constellation of Eridanus.

55 Eridani visual magnitude is 6.7. Because of its reltive faintness, 55 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 55 Eridani:

Color of 55 Eridani ⬤

Magnitude of 55 Eridani 6.7

Class Giant

VISIBILITY RIGHT NOW

55 Eridani is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.5°
Azimuth: 277.9°
Direction: West

Celestial coordinates and finder chart of 55 Eridani

55 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 55 Eridani are provided in the following table:

Right Ascension J2000 04h 43m 35s

Declination J2000 -08° 47’ 45”

Galactic Longitude 205.96°

Galactic Latitude -32.37°

Constellation Eridanus

The simplified sky map below shows the position of 55 Eridani in the sky:

Simplified finder chart for 55 Eridani.

Visibility of 55 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 55 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: 98.8° RISE 23:35

Max altitude: 29.7° TRANSIT 4:53

Azimuth: 261.2° SET 10:06

Digitized Sky Survey image of 55 Eridani

The image below is a photograph of 55 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 55 Eridani is 0.032 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 55 Eridani. The red arrow shows the motion of 55 Eridani during the next 10000 years (5.33 arcmin in Right Ascension and -4.00 arcmin in declination);

Spectral properties of 55 Eridani

55 Eridani belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Spectral Type G8III

Color Index (B-V) 0.92

Temperature of 55 Eridani 4943K

55 Eridani star system properties

55 Eridani is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 55 Eridani double sysyem:

Main star magnitude 6.7

Secondary star magnitude 6.8

Magnitude difference 0.1

Separation 9.3 arcsec

Alternative designations of 55 Eridani

Flamsteed designation 55 Eridani

Henry Draper Catalogue HD30021

SAO Catalogue SAO131443

Durchmusterung Catalogue BD-09 970

Aitken Double Star Catalogue ADS3409

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