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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sagittarius » 


Altitude: -31.1°   Azimuth: 267.3°   Direction: West

HR6773 is a variable and double giant star in the constellation of Sagittarius.

HR6773 visual magnitude is 6.61. Because of its reltive faintness, HR6773 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 HR6773:


HR6773 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -31.1°
Azimuth: 267.3°
Direction: West

Celestial coordinates and finder chart of HR6773

HR6773 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 HR6773 are provided in the following table:

18h 08m 54s
-25° 28’ 21”

The simplified sky map below shows the position of HR6773 in the sky:

Finder chart HR6773 star
Simplified finder chart for HR6773.

Visibility of HR6773 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 HR6773 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: 115.5°
Max altitude: 13.0°
Azimuth: 244.5°

Digitized Sky Survey image of HR6773

The image below is a photograph of HR6773 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 HR6773 is 0.003 arcsec per year in Right Ascension and 0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6773 star
DSS2 image of HR6773. The red arrow shows the motion of HR6773 during the next 10000 years (0.50 arcmin in Right Ascension and 3.00 arcmin in declination);

Distance of HR6773 from the Sun and relative movement

HR6773 is distant 3,165.05 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

970.87 pc
3,165.05 ly
-6 km/s
0.003 arcsec/year
0.018 arcsec/year

Spectral properties of HR6773

HR6773 belongs to spectral class B3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR6773 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6773. Attribution: Richard Powell / CC BY-SA

HR6773 star system properties

HR6773 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 HR6773 double sysyem:

13.3 arcsec

Alternative designations of HR6773