HR6640 is a giant star in the constellation of Ara.
HR6640 visual magnitude is 6.11. Because of its reltive faintness, HR6640 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 HR6640:
Celestial coordinates and finder chart of HR6640
HR6640 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6640 are provided in the following table:
The simplified sky map below shows the position of HR6640 in the sky:
Visibility of HR6640 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR6640 is currently not visible from Greenwich, United Kingdom
Digitized Sky Survey image of HR6640
The image below is a photograph of HR6640 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 HR6640 is 0.009 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of HR6640 from the Sun and relative movement
HR6640 is distant 682.01 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.
Spectral properties of HR6640
HR6640 belongs to spectral class G6 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where HR6640 is situated in the Hertzsprung–Russell diagram.