υ4 Eridani (upsilon4 Eridani)

Below the horizon. Rise: 10:54 | Tran: 13:05 | Set: 15:16

Alt: -66.14° Az: 50.52° Direction: North-East

υ4 Eridani is a variable and multiple main-sequence star of spectral class B9 in the constellation of Eridanus.

υ4 Eridani visual magnitude is 3.56. Because of its moderate brightness, υ4 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.

Image of υ4 Eridani (upsilon4 Eridani) star

DSS2 image of υ4 Eridani. The red arrow shows the motion of υ4 Eridani during the next 10000 years (11.17 arcmin in Right Ascension and -1.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 04h 18m 51s

Declination -33° 44’ 15”

Hour Angle 13h 28m 11s

Sidereal Time 17h 47m 02s

J2000

Right Ascension 04h 17m 53s

Declination -33° 47’ 53”

Galactic Coordinates

Galactic Longitude 234.67°

Galactic Latitude -45.47°

Finder Chart

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Finder chart for υ4 Eridani (upsilon4 Eridani).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.56

Class Main-sequence

Absolute magnitude -0.13

Spectral Type B9V

Color Index (B-V) -0.12

Temperature 11920K

The red dot in the diagram below shows where υ4 Eridani is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of υ4 Eridani. Attribution: Richard Powell / CC BY-SA

Star System Properties

υ4 Eridani is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the υ4 Eridani double sysyem:

Main star magnitude 3.56

Secondary star magnitude 4.56

Magnitude difference 1

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

υ4 Eridani is distant 178.43 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 54.73

Distance (light year) 178.43

Radial Speed 18 km/s

Proper Motion RA 0.067 arcsec/y

Proper Motion Dec -0.008"/y

Alternative Designations

Bayer designation υ4 Eridani
(upsilon4 Eridani)

Flamsteed designation 41 Eridani

Henry Draper Catalogue HD27376

SAO Catalogue SAO194902

Hipparcos Catalogue HIP20042

Durchmusterung Catalogue CD-34 1614

General Catalogue of Variable Stars Var

Visibility from Your Location

Today's υ4 Eridani (upsilon4 Eridani) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 123.7° RISE 10:54

Max altitude: 4.8° TRANSIT 13:05

Azimuth: 236.3° SET 15:16

Set Location

Other stars in Eridanus