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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: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations » Pegasus » 


Altitude: -1.4°   Azimuth: 295.8°   Direction: West-North-West

HR8456 is a double hypergiant star in the constellation of Pegasus.

HR8456 visual magnitude is 6.33. Because of its reltive faintness, HR8456 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 HR8456 is 0.034 arcsec per year in Right Ascension and -0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8456 star
DSS2 image of HR8456. The red arrow shows the motion of HR8456 during the next 10000 years (5.67 arcmin in Right Ascension and -4.33 arcmin in declination);

Key facts about HR8456


HR8456 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -1.4°
Azimuth: 295.8°
Direction: West-North-West

Celestial coordinates and finder chart of HR8456

HR8456 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 HR8456 are provided in the following table:

22h 10m 22s
+14° 37’ 48”

The simplified sky map below shows the position of HR8456 in the sky:

Finder chart HR8456 star
Simplified finder chart for HR8456.

Visibility of HR8456 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 HR8456 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: 75.4°
Max altitude: 53.2°
Azimuth: 284.6°

Distance of HR8456 from the Sun and relative movement

HR8456 is distant 423.93 light years from the Sun and it is moving towards the Sun at the speed of 42 kilometers per second.

130.04 pc
423.93 ly
-42 km/s
0.034 arcsec/year
-0.026 arcsec/year

Spectral properties of HR8456

HR8456 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 HR8456 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8456. Attribution: Richard Powell / CC BY-SA

HR8456 star system properties

HR8456 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR8456 double sysyem:

21.5 arcsec

Alternative designations of HR8456