HR7818 is a double sub-giant star in the constellation of Cygnus.
HR7818 visual magnitude is 6.44. Because of its reltive faintness, HR7818 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 HR7818:
Celestial coordinates and finder chart of HR7818
HR7818 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 HR7818 are provided in the following table:
The simplified sky map below shows the position of HR7818 in the sky:
Visibility of HR7818 from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR7818 is circumpolar and transits at 08:22 UTC (altitude: 81.9°)
Digitized Sky Survey image of HR7818
The image below is a photograph of HR7818 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 HR7818 is 0.01 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR7818 from the Sun and relative movement
HR7818 is distant 947.67 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.
Spectral properties of HR7818
HR7818 belongs to spectral class A2 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where HR7818 is situated in the Hertzsprung–Russell diagram.
HR7818 star system properties
HR7818 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 HR7818 double sysyem: