τ3 Eridani (tau3 Eridani)
τ3 Eridani is a sub-giant star in the constellation of Eridanus.
τ3 Eridani visual magnitude is 4.09. Because of its moderate brightness, τ3 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 τ3 Eridani:
Celestial coordinates and finder chart of τ3 Eridani
τ3 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 τ3 Eridani are provided in the following table:
The simplified sky map below shows the position of τ3 Eridani in the sky:
Visibility of τ3 Eridani from your location
Digitized Sky Survey image of τ3 Eridani
The image below is a photograph of τ3 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 τ3 Eridani is -0.145 arcsec per year in Right Ascension and -0.054 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of τ3 Eridani from the Sun and relative movement
τ3 Eridani is distant 86.13 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.
Spectral properties of τ3 Eridani
τ3 Eridani belongs to spectral class A4 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where τ3 Eridani is situated in the Hertzsprung–Russell diagram.