Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
sleep NighttimeWhat's Visible Now
All Constellations » Sagittarius » 


Altitude: -18.8°   Azimuth: 239.0°   Direction: West-South-West

HR6788 is a variable main-sequence star in the constellation of Sagittarius.

HR6788 visual magnitude is 6.16. Because of its reltive faintness, HR6788 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 HR6788:


HR6788 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -18.8°
Azimuth: 239.0°
Direction: West-South-West

Celestial coordinates and finder chart of HR6788

HR6788 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 HR6788 are provided in the following table:

18h 10m 55s
-33° 47’ 58”

The simplified sky map below shows the position of HR6788 in the sky:

Finder chart HR6788 star
Simplified finder chart for HR6788.

Visibility of HR6788 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 HR6788 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: 123.8°
Max altitude: 4.7°
Azimuth: 236.2°

Digitized Sky Survey image of HR6788

The image below is a photograph of HR6788 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 HR6788 is -0.011 arcsec per year in Right Ascension and 0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6788 star
DSS2 image of HR6788. The red arrow shows the motion of HR6788 during the next 10000 years (-1.83 arcmin in Right Ascension and 2.17 arcmin in declination);

Distance of HR6788 from the Sun and relative movement

HR6788 is distant 32,600,000.00 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

10,000,000.00 pc
32,600,000.00 ly
-25 km/s
-0.011 arcsec/year
0.013 arcsec/year

Spectral properties of HR6788

HR6788 belongs to spectral class B1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR6788 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6788. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6788