HR8399 is a variable and double hypergiant star in the constellation of Cepheus.
HR8399 visual magnitude is 6.66. Because of its reltive faintness, HR8399 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 HR8399:
Celestial coordinates and finder chart of HR8399
HR8399 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8399 are provided in the following table:
The simplified sky map below shows the position of HR8399 in the sky:
Visibility of HR8399 from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR8399 is circumpolar and transits at 09:34 UTC (altitude: 79.0°)
Digitized Sky Survey image of HR8399
The image below is a photograph of HR8399 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 HR8399 is -0.001 arcsec per year in Right Ascension and 0.007 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of HR8399 from the Sun and relative movement
HR8399 is distant 23,285.71 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.
Spectral properties of HR8399
HR8399 belongs to spectral class B0 and has a luminosity class of IV corresponding to a hypergiant star.
The red dot in the diagram below shows where HR8399 is situated in the Hertzsprung–Russell diagram.
HR8399 star system properties
HR8399 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR8399 double sysyem: