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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
SunriseRise: 6:08  
clear_day Transit: 12:59  
SunsetSet: 19:51
sunny DaytimeWhat's Visible Now?
All Constellations » Capricornus » 


Altitude: 16.4°   Azimuth: 214.5°   Direction: South-West

HR7819 is a hypergiant star in the constellation of Capricornus.

HR7819 visual magnitude is 6.41. Because of its reltive faintness, HR7819 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR7819 is 0.01 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7819 star
DSS2 image of HR7819. The red arrow shows the motion of HR7819 during the next 10000 years (1.67 arcmin in Right Ascension and -1.33 arcmin in declination);

Key facts about HR7819


HR7819 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 16.4°
Azimuth: 214.5°
Direction: South-West

Celestial coordinates and finder chart of HR7819

HR7819 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 HR7819 are provided in the following table:

20h 28m 43s
-15° 44’ 30”

The simplified sky map below shows the position of HR7819 in the sky:

Finder chart HR7819 star
Simplified finder chart for HR7819.

Visibility of HR7819 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 HR7819 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: 105.7°
Max altitude: 22.8°
Azimuth: 254.3°

Distance of HR7819 from the Sun and relative movement

HR7819 is distant 617.42 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

189.39 pc
617.42 ly
-18 km/s
0.01 arcsec/year
-0.008 arcsec/year

Spectral properties of HR7819

HR7819 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR7819 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7819. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7819