Angetenar - τ2 Eridani (tau2 Eridani)
Angetenar, also designated as τ2 Eridani (tau2 Eridani), is a double hypergiant star in the constellation of Eridanus.
Angetenar visual magnitude is 4.75. Because of its moderate brightness, Angetenar 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 Angetenar:
Celestial coordinates and finder chart of Angetenar
Angetenar 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 Angetenar are provided in the following table:
The simplified sky map below shows the position of Angetenar in the sky:
Visibility of Angetenar from your location
Digitized Sky Survey image of Angetenar
The image below is a photograph of Angetenar 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 Angetenar is -0.046 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Angetenar from the Sun and relative movement
Angetenar is distant 182.63 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.
Spectral properties of Angetenar
Angetenar belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where Angetenar is situated in the Hertzsprung–Russell diagram.
Angetenar star system properties
Angetenar 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 Angetenar double sysyem: