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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?


Above the horizon.  Circumpolar today
Altitude: 27.2°   Azimuth: 317.1°   Direction: North-West

HR6399 is a variable and multiple giant star of spectral class A5 in the constellation of Hercules.

HR6399 visual magnitude is 6.04. Because of its faintness, HR6399 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR6399

Finder chart HR6399 star
Simplified finder chart for HR6399.

HR6399 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 HR6399 are provided in the following table:

17h 11m 40s
+49° 44’ 48”
Image of HR6399 star
DSS2 image of HR6399. The red arrow shows the motion of HR6399 during the next 10000 years (3.33 arcmin in Right Ascension and 5.83 arcmin in declination);

Key facts about HR6399


and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR6399 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6399. Attribution: Richard Powell / CC BY-SA

HR6399 star system properties

HR6399 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR6399 double sysyem:

5.2 arcsec

Distance of HR6399 from the Sun and relative movement

HR6399 is distant 315.59 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

96.81 pc
315.59 ly
-11 km/s
0.02 arcsec/year
0.035 arcsec/year

Alternative designations of HR6399


Visibility of HR6399 from your location

HR6399 is circumpolar and transits at 23:05 UTC (altitude: 88.3°)