HR7904 is a giant star in the constellation of Cygnus.
HR7904 visual magnitude is 5.68. Because of its reltive faintness, HR7904 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 HR7904:
Celestial coordinates and finder chart of HR7904
HR7904 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 HR7904 are provided in the following table:
The simplified sky map below shows the position of HR7904 in the sky:
Visibility of HR7904 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's HR7904 rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of HR7904
The image below is a photograph of HR7904 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 HR7904 is -0.032 arcsec per year in Right Ascension and -0.058 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR7904 from the Sun and relative movement
HR7904 is distant 386.26 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.
Spectral properties of HR7904
HR7904 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where HR7904 is situated in the Hertzsprung–Russell diagram.