HR6638 is a sub-giant star in the constellation of Hercules.
HR6638 visual magnitude is 5.69. Because of its reltive faintness, HR6638 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 HR6638:
Celestial coordinates and finder chart of HR6638
HR6638 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 HR6638 are provided in the following table:
The simplified sky map below shows the position of HR6638 in the sky:
Visibility of HR6638 from your location
Digitized Sky Survey image of HR6638
The image below is a photograph of HR6638 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 HR6638 is 0.026 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 HR6638 from the Sun and relative movement
HR6638 is distant 250.00 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.
Spectral properties of HR6638
HR6638 belongs to spectral class G5 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where HR6638 is situated in the Hertzsprung–Russell diagram.