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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Hercules » 


Altitude: 28.9°   Azimuth: 283.7°   Direction: West-North-West

HR6799 is a giant star in the constellation of Hercules.

HR6799 visual magnitude is 6.38. Because of its reltive faintness, HR6799 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 HR6799:


HR6799 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 28.9°
Azimuth: 283.7°
Direction: West-North-West

Celestial coordinates and finder chart of HR6799

HR6799 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 HR6799 are provided in the following table:

18h 09m 10s
+30° 28’ 09”

The simplified sky map below shows the position of HR6799 in the sky:

Finder chart HR6799 star
Simplified finder chart for HR6799.

Visibility of HR6799 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR6799 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.5°
Max altitude: 69.0°
Azimuth: 300.5°

Digitized Sky Survey image of HR6799

The image below is a photograph of HR6799 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 HR6799 is 0.071 arcsec per year in Right Ascension and 0.133 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR6799 star
DSS2 image of HR6799. The red arrow shows the motion of HR6799 during the next 1000 years (1.18 arcmin in Right Ascension and 2.22 arcmin in declination);

Distance of HR6799 from the Sun and relative movement

HR6799 is distant 439.95 light years from the Sun and it is moving towards the Sun at the speed of 80 kilometers per second.

134.95 pc
439.95 ly
-80 km/s
0.071 arcsec/year
0.133 arcsec/year

Spectral properties of HR6799

HR6799 belongs to spectral class K1


The red dot in the diagram below shows where HR6799 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6799. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6799