HR3639 is a variable giant star in the constellation of Cancer.
HR3639 visual magnitude is 5.95. Because of its reltive faintness, HR3639 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 HR3639:
Celestial coordinates and finder chart of HR3639
HR3639 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 HR3639 are provided in the following table:
The simplified sky map below shows the position of HR3639 in the sky:
Visibility of HR3639 from your location
Digitized Sky Survey image of HR3639
The image below is a photograph of HR3639 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 HR3639 is -0.021 arcsec per year in Right Ascension and -0.034 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR3639 from the Sun and relative movement
HR3639 is distant 397.08 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.
Spectral properties of HR3639
HR3639 belongs to spectral class M6 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where HR3639 is situated in the Hertzsprung–Russell diagram.