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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

τ1 Eridani (tau1 Eridani)

Above the horizon.  Rise: 5:22 | Tran: 9:40 | Set: 13:59
Altitude: 7.9°   Azimuth: 226.2°   Direction: South-West

τ1 Eridani is a main-sequence star of spectral class F6 in the constellation of Eridanus.

τ1 Eridani visual magnitude is 4.47. Because of its moderate brightness, τ1 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.

Celestial coordinates and finder chart of τ1 Eridani

Finder chart τ1 Eridani (tau1 Eridani) star
Simplified finder chart for τ1 Eridani (tau1 Eridani).

τ1 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 τ1 Eridani are provided in the following table:

02h 45m 06s
-18° 34’ 21”
Image of τ1 Eridani (tau1 Eridani) star
DSS2 image of τ1 Eridani. The red arrow shows the motion of τ1 Eridani during the next 1000 years (5.50 arcmin in Right Ascension and 0.63 arcmin in declination);

Key facts about τ1 Eridani


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where τ1 Eridani is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of τ1 Eridani. Attribution: Richard Powell / CC BY-SA

Distance of τ1 Eridani from the Sun and relative movement

τ1 Eridani is distant 45.56 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

13.97 pc
45.56 ly
26 km/s
0.33 arcsec/year
0.038 arcsec/year

Alternative designations of τ1 Eridani

τ1 Eridani
(tau1 Eridani)

Visibility of τ1 Eridani from your location

Today's τ1 Eridani (tau1 Eridani) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.6°
Max altitude: 19.9°
Azimuth: 251.4°