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: 4:51  
clear_day Transit: 12:56  
SunsetSet: 21:00 south
sunny DaytimeWhat's Visible Now
All Constellations » Pegasus » 


HR8491 is a main-sequence star in the constellation of Pegasus.

HR8491 visual magnitude is 6.21. Because of its reltive faintness, HR8491 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 HR8491:

HR8491 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 35°.

Celestial coordinates and finder chart of HR8491

HR8491 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 HR8491 are provided in the following table:

22h 15m 59s
+08° 32’ 57”

The simplified sky map below shows the position of HR8491 in the sky:

Finder chart HR8491 star
Simplified finder chart for HR8491.

Visibility of HR8491 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 HR8491 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: 81.5°
Max altitude: 47.1°
Azimuth: 278.5°
HR8491 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8491

The image below is a photograph of HR8491 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 HR8491 is 0.034 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8491 star
DSS2 image of HR8491. The red arrow shows the motion of HR8491 during the next 10000 years (5.67 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR8491 from the Sun and relative movement

HR8491 is distant 395.15 light years from the Sun

121.21 pc
395.15 ly
0.034 arcsec/year
-0.011 arcsec/year

Spectral properties of HR8491

HR8491 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8491 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8491. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8491