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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
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All Constellations » Cygnus » 


Altitude: 12.8°   Azimuth: 8.6°   Direction: North

HR8025 is a double hypergiant star in the constellation of Cygnus.

HR8025 visual magnitude is 5.81. Because of its reltive faintness, HR8025 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 HR8025:


HR8025 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 12.8°
Azimuth: 8.6°
Direction: North

Celestial coordinates and finder chart of HR8025

HR8025 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 HR8025 are provided in the following table:

20h 56m 25s
+50° 43’ 42”

The simplified sky map below shows the position of HR8025 in the sky:

Finder chart HR8025 star
Simplified finder chart for HR8025.

Visibility of HR8025 from your location

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

HR8025 is circumpolar and transits at 16:19 UTC (altitude: 89.2°)

Digitized Sky Survey image of HR8025

The image below is a photograph of HR8025 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 HR8025 is 0.041 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8025 star
DSS2 image of HR8025. The red arrow shows the motion of HR8025 during the next 10000 years (6.83 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR8025 from the Sun and relative movement

HR8025 is distant 173.87 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

53.33 pc
173.87 ly
-15 km/s
0.041 arcsec/year
-0.015 arcsec/year

Spectral properties of HR8025

HR8025 belongs to spectral class F0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8025 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8025. Attribution: Richard Powell / CC BY-SA

HR8025 star system properties

HR8025 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR8025 double sysyem:

7.2 arcsec

Alternative designations of HR8025