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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: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Pegasus » 


Altitude: 49.9°   Azimuth: 188.5°   Direction: South

HR8458 is a giant star in the constellation of Pegasus.

HR8458 visual magnitude is 5.78. Because of its reltive faintness, HR8458 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 HR8458:


HR8458 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 49.9°
Azimuth: 188.5°
Direction: South

Celestial coordinates and finder chart of HR8458

HR8458 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 HR8458 are provided in the following table:

22h 10m 37s
+11° 37’ 27”

The simplified sky map below shows the position of HR8458 in the sky:

Finder chart HR8458 star
Simplified finder chart for HR8458.

Visibility of HR8458 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 HR8458 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: 78.4°
Max altitude: 50.1°
Azimuth: 281.6°

Digitized Sky Survey image of HR8458

The image below is a photograph of HR8458 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 HR8458 is -0.046 arcsec per year in Right Ascension and -0.054 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8458 star
DSS2 image of HR8458. The red arrow shows the motion of HR8458 during the next 10000 years (-7.67 arcmin in Right Ascension and -9.00 arcmin in declination);

Distance of HR8458 from the Sun and relative movement

HR8458 is distant 624.52 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

191.57 pc
624.52 ly
17 km/s
-0.046 arcsec/year
-0.054 arcsec/year

Spectral properties of HR8458

HR8458 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8458 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8458. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8458