τ9 Eridani (tau9 Eridani)
τ9 Eridani is a variable main-sequence star in the constellation of Eridanus.
τ9 Eridani visual magnitude is 4.66. Because of its moderate brightness, τ9 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 τ9 Eridani:
Celestial coordinates and finder chart of τ9 Eridani
τ9 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 τ9 Eridani are provided in the following table:
The simplified sky map below shows the position of τ9 Eridani in the sky:
Visibility of τ9 Eridani from your location
Digitized Sky Survey image of τ9 Eridani
The image below is a photograph of τ9 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 τ9 Eridani is 0.015 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of τ9 Eridani from the Sun and relative movement
τ9 Eridani is distant 330.96 light years from the Sun and it is moving far from the Sun at the speed of 24 kilometers per second.
Spectral properties of τ9 Eridani
τ9 Eridani belongs to spectral class B6 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where τ9 Eridani is situated in the Hertzsprung–Russell diagram.