We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Cygnus » 


Altitude: 85.5°   Azimuth: 296.5°   Direction: West-North-West

HR8078 is a hypergiant star in the constellation of Cygnus.

HR8078 visual magnitude is 5.9. Because of its reltive faintness, HR8078 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 HR8078:


HR8078 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 85.5°
Azimuth: 296.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR8078

HR8078 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8078 are provided in the following table:

21h 03m 47s
+53° 17’ 09”

The simplified sky map below shows the position of HR8078 in the sky:

Finder chart HR8078 star
Simplified finder chart for HR8078.

Visibility of HR8078 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR8078 is circumpolar and transits at 15:55 UTC (altitude: 88.2°)

Digitized Sky Survey image of HR8078

The image below is a photograph of HR8078 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 HR8078 is 0.04 arcsec per year in Right Ascension and 0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8078 star
DSS2 image of HR8078. The red arrow shows the motion of HR8078 during the next 10000 years (6.67 arcmin in Right Ascension and 6.17 arcmin in declination);

Distance of HR8078 from the Sun and relative movement

HR8078 is distant 404.97 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

124.22 pc
404.97 ly
-16 km/s
0.04 arcsec/year
0.037 arcsec/year

Spectral properties of HR8078

HR8078 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 HR8078 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8078. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8078