υ4 Eridani (upsilon4 Eridani)
υ4 Eridani is a variable and multiple main-sequence star in the constellation of Eridanus.
υ4 Eridani visual magnitude is 3.56. Because of its moderate brightness, υ4 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 υ4 Eridani:
Celestial coordinates and finder chart of υ4 Eridani
υ4 Eridani is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of υ4 Eridani are provided in the following table:
The simplified sky map below shows the position of υ4 Eridani in the sky:
Visibility of υ4 Eridani from your location
Digitized Sky Survey image of υ4 Eridani
The image below is a photograph of υ4 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 υ4 Eridani is 0.067 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of υ4 Eridani from the Sun and relative movement
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.
Spectral properties of υ4 Eridani
υ4 Eridani belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where υ4 Eridani is situated in the Hertzsprung–Russell diagram.
υ4 Eridani 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: