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: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
sunny DaytimeWhat's Visible Now
All Constellations » Pegasus » 


HR8455 is a hypergiant star in the constellation of Pegasus.

HR8455 visual magnitude is 6.18. Because of its reltive faintness, HR8455 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 HR8455:

HR8455 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 47°.

Celestial coordinates and finder chart of HR8455

HR8455 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 HR8455 are provided in the following table:

22h 10m 18s
+19° 37’ 00”

The simplified sky map below shows the position of HR8455 in the sky:

Finder chart HR8455 star
Simplified finder chart for HR8455.

Visibility of HR8455 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 HR8455 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: 70.4°
Max altitude: 58.1°
Azimuth: 289.6°
HR8455 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8455

The image below is a photograph of HR8455 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 HR8455 is 0.086 arcsec per year in Right Ascension and -0.075 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8455 star
DSS2 image of HR8455. The red arrow shows the motion of HR8455 during the next 10000 years (14.33 arcmin in Right Ascension and -12.50 arcmin in declination);

Distance of HR8455 from the Sun and relative movement

HR8455 is distant 181.01 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

55.52 pc
181.01 ly
22 km/s
0.086 arcsec/year
-0.075 arcsec/year

Spectral properties of HR8455

HR8455 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8455 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8455. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8455