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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: 7:37  
clear_day Transit: 11:46  
SunsetSet: 15:55 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Ophiuchus » 


Altitude: 33.8°   Azimuth: 223.2°   Direction: South-West

HR6800 is a giant star in the constellation of Ophiuchus.

HR6800 visual magnitude is 5.51. Because of its reltive faintness, HR6800 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 HR6800:


HR6800 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.8°
Azimuth: 223.2°
Direction: South-West

Celestial coordinates and finder chart of HR6800

HR6800 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6800 are provided in the following table:

18h 10m 40s
+03° 19’ 27”

The simplified sky map below shows the position of HR6800 in the sky:

Finder chart HR6800 star
Simplified finder chart for HR6800.

Visibility of HR6800 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 HR6800 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: 86.7°
Max altitude: 41.8°
Azimuth: 273.3°

Digitized Sky Survey image of HR6800

The image below is a photograph of HR6800 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 HR6800 is 0.021 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6800 star
DSS2 image of HR6800. The red arrow shows the motion of HR6800 during the next 10000 years (3.50 arcmin in Right Ascension and -0.50 arcmin in declination);

Distance of HR6800 from the Sun and relative movement

HR6800 is distant 412.14 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

126.42 pc
412.14 ly
10 km/s
0.021 arcsec/year
-0.003 arcsec/year

Spectral properties of HR6800

HR6800 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 HR6800 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6800. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6800