HR4008 is a variable hypergiant star in the constellation of Ursa Major.
HR4008 visual magnitude is 6.25. Because of its reltive faintness, HR4008 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about HR4008:
Celestial coordinates and finder chart of HR4008
HR4008 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4008 are provided in the following table:
The simplified sky map below shows the position of HR4008 in the sky:
Visibility of HR4008 from your location
HR4008 is circumpolar and transits at 05:46 UTC (altitude: 81.5°)
Digitized Sky Survey image of HR4008
The image below is a photograph of HR4008 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 HR4008 is 0.015 arcsec per year in Right Ascension and 0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR4008 from the Sun and relative movement
HR4008 is distant 1,743.32 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.
Spectral properties of HR4008
HR4008 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where HR4008 is situated in the Hertzsprung–Russell diagram.