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: 7:02  
clear_day Transit: 12:47  
SunsetSet: 18:32 south
sunny DaytimeWhat's Visible Now
All Constellations » Cygnus » 


Altitude: 15.0°   Azimuth: 359.5°   Direction: North

HR8106 is a giant star in the constellation of Cygnus.

HR8106 visual magnitude is 5.73. Because of its reltive faintness, HR8106 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 HR8106:


HR8106 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 15.0°
Azimuth: 359.5°
Direction: North

Celestial coordinates and finder chart of HR8106

HR8106 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 HR8106 are provided in the following table:

21h 10m 15s
+53° 33’ 47”

The simplified sky map below shows the position of HR8106 in the sky:

Finder chart HR8106 star
Simplified finder chart for HR8106.

Visibility of HR8106 from your location

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

HR8106 is circumpolar and transits at 20:21 UTC (altitude: 87.9°)

Digitized Sky Survey image of HR8106

The image below is a photograph of HR8106 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 HR8106 is 0.026 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8106 star
DSS2 image of HR8106. The red arrow shows the motion of HR8106 during the next 10000 years (4.33 arcmin in Right Ascension and 0.17 arcmin in declination);

Distance of HR8106 from the Sun and relative movement

HR8106 is distant 430.65 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

132.10 pc
430.65 ly
-21 km/s
0.026 arcsec/year
0.001 arcsec/year

Spectral properties of HR8106

HR8106 belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8106 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8106. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8106