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: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
sunny DaytimeWhat's Visible Now
All Constellations » Cepheus » 


Altitude: 38.2°   Azimuth: 14.4°   Direction: North-North-East

HR8493 is a variable and double hypergiant star in the constellation of Cepheus.

HR8493 visual magnitude is 6.08. Because of its reltive faintness, HR8493 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 HR8493:


HR8493 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 38.2°
Azimuth: 14.4°
Direction: North-North-East

Celestial coordinates and finder chart of HR8493

HR8493 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8493 are provided in the following table:

22h 12m 52s
+73° 18’ 25”

The simplified sky map below shows the position of HR8493 in the sky:

Finder chart HR8493 star
Simplified finder chart for HR8493.

Visibility of HR8493 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR8493 is circumpolar and transits at 21:39 UTC (altitude: 68.2°)

Digitized Sky Survey image of HR8493

The image below is a photograph of HR8493 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 HR8493 is 0.023 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8493 star
DSS2 image of HR8493. The red arrow shows the motion of HR8493 during the next 10000 years (3.83 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of HR8493 from the Sun and relative movement

HR8493 is distant 564.01 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

173.01 pc
564.01 ly
1 km/s
0.023 arcsec/year
0.02 arcsec/year

Spectral properties of HR8493

HR8493 belongs to spectral class K0 and has a luminosity class of II corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8493 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8493. Attribution: Richard Powell / CC BY-SA

HR8493 star system properties

HR8493 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR8493 double sysyem:

28.7 arcsec

Alternative designations of HR8493