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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: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Pegasus » 


Altitude: 6.6°   Azimuth: 43.0°   Direction: North-East

HR8798 is a variable and double main-sequence star in the constellation of Pegasus.

HR8798 visual magnitude is 6.02. Because of its reltive faintness, HR8798 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 HR8798:


HR8798 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 6.6°
Azimuth: 43.0°
Direction: North-East

Celestial coordinates and finder chart of HR8798

HR8798 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 HR8798 are provided in the following table:

23h 07m 27s
+32° 49’ 32”

The simplified sky map below shows the position of HR8798 in the sky:

Finder chart HR8798 star
Simplified finder chart for HR8798.

Visibility of HR8798 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 HR8798 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: 57.2°
Max altitude: 71.3°
Azimuth: 302.8°

Digitized Sky Survey image of HR8798

The image below is a photograph of HR8798 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 HR8798 is -0.024 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8798 star
DSS2 image of HR8798. The red arrow shows the motion of HR8798 during the next 10000 years (-4.00 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of HR8798 from the Sun and relative movement

HR8798 is distant 490.96 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

150.60 pc
490.96 ly
-1 km/s
-0.024 arcsec/year
0.008 arcsec/year

Spectral properties of HR8798

HR8798 belongs to spectral class A4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR8798 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8798. Attribution: Richard Powell / CC BY-SA

HR8798 star system properties

HR8798 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 HR8798 double sysyem:

8.4 arcsec

Alternative designations of HR8798