τ7 Eridani (tau7 Eridani)

Below the horizon. Rise: 7:01 | Tran: 10:45 | Set: 14:29

Alt: -60.96° Az: 21.90° Direction: South

τ7 Eridani is a variable star of spectral class A2 in the constellation of Eridanus.

τ7 Eridani visual magnitude is 5.24. Because of its faintness, τ7 Eridani is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of τ7 Eridani. The red arrow shows the motion of τ7 Eridani during the next 10000 years (7.17 arcmin in Right Ascension and 8.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 03h 48m 45s

Declination -23° 47’ 51”

Hour Angle 12h 45m 38s

Sidereal Time 16h 34m 24s

J2000

Right Ascension 03h 47m 39s

Declination -23° 52’ 28”

Galactic Coordinates

Galactic Longitude 218.37°

Galactic Latitude -50.3°

Finder Chart

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Finder chart for τ7 Eridani (tau7 Eridani).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.24

Class

Absolute magnitude 0.63

Spectral Type A2

Color Index (B-V) 0.07

Temperature 9328K

The red dot in the diagram below shows where τ7 Eridani is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of τ7 Eridani. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

τ7 Eridani is distant 272.12 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

Distance (parsec) 83.47

Distance (light year) 272.12

Radial Speed 29 km/s

Proper Motion RA 0.043 arcsec/y

Proper Motion Dec 0.048"/y

Alternative Designations

Bayer designation τ7 Eridani
(tau7 Eridani)

Flamsteed designation 28 Eridani

Henry Draper Catalogue HD23878

SAO Catalogue SAO168836

Hipparcos Catalogue HIP17717

Durchmusterung Catalogue CD-24 1877

General Catalogue of Variable Stars Var

Visibility from Your Location

Today's τ7 Eridani (tau7 Eridani) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.8° RISE 7:01

Max altitude: 14.7° TRANSIT 10:45

Azimuth: 246.2° SET 14:29

Set Location

Other stars in Eridanus