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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: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sunny DaytimeWhat's Visible Now?
All Constellations » Sagittarius » 


Altitude: 4.3°   Azimuth: 210.6°   Direction: South-South-West

HR6766 is a double giant star in the constellation of Sagittarius.

HR6766 visual magnitude is 4.57. Because of its moderate brightness, HR6766 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR6766:


HR6766 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.3°
Azimuth: 210.6°
Direction: South-South-West

Celestial coordinates and finder chart of HR6766

HR6766 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6766 are provided in the following table:

18h 08m 04s
-28° 27’ 25”

The simplified sky map below shows the position of HR6766 in the sky:

Finder chart HR6766 star
Simplified finder chart for HR6766.

Visibility of HR6766 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 HR6766 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: 118.5°
Max altitude: 10.1°
Azimuth: 241.5°

Digitized Sky Survey image of HR6766

The image below is a photograph of HR6766 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 HR6766 is 0.027 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6766 star
DSS2 image of HR6766. The red arrow shows the motion of HR6766 during the next 10000 years (4.50 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR6766 from the Sun and relative movement

HR6766 is distant 347.55 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

106.61 pc
347.55 ly
-5 km/s
0.027 arcsec/year
-0.03 arcsec/year

Spectral properties of HR6766

HR6766 belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR6766 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6766. Attribution: Richard Powell / CC BY-SA

HR6766 star system properties

HR6766 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR6766 double sysyem:

0.3 arcsec

Alternative designations of HR6766