21 Eridani is a main-sequence star in the constellation of Eridanus.
21 Eridani visual magnitude is 5.96. Because of its reltive faintness, 21 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 21 Eridani:
Celestial coordinates and finder chart of 21 Eridani
21 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 21 Eridani are provided in the following table:
The simplified sky map below shows the position of 21 Eridani in the sky:
Visibility of 21 Eridani from your location
Today's 21 Eridani rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of 21 Eridani
The image below is a photograph of 21 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 21 Eridani is -0.015 arcsec per year in Right Ascension and -0.205 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of 21 Eridani from the Sun and relative movement
21 Eridani is distant 114.63 light years from the Sun and it is moving far from the Sun at the speed of 40 kilometers per second.
Spectral properties of 21 Eridani
21 Eridani belongs to spectral class K1 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where 21 Eridani is situated in the Hertzsprung–Russell diagram.