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: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
sunny DaytimeWhat's Visible Now
All Constellations » Cepheus » 


Altitude: 21.4°   Azimuth: 3.7°   Direction: North

HR8224 is a variable and double giant star in the constellation of Cepheus.

HR8224 visual magnitude is 6.1. Because of its reltive faintness, HR8224 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 HR8224:


HR8224 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 21.4°
Azimuth: 3.7°
Direction: North

Celestial coordinates and finder chart of HR8224

HR8224 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 HR8224 are provided in the following table:

21h 27m 25s
+59° 45’ 00”

The simplified sky map below shows the position of HR8224 in the sky:

Finder chart HR8224 star
Simplified finder chart for HR8224.

Visibility of HR8224 from your location

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

HR8224 is circumpolar and transits at 21:13 UTC (altitude: 81.7°)

Digitized Sky Survey image of HR8224

The image below is a photograph of HR8224 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 HR8224 is -0.022 arcsec per year in Right Ascension and -0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8224 star
DSS2 image of HR8224. The red arrow shows the motion of HR8224 during the next 10000 years (-3.67 arcmin in Right Ascension and -3.00 arcmin in declination);

Distance of HR8224 from the Sun and relative movement

HR8224 is distant 981.93 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

301.20 pc
981.93 ly
-16 km/s
-0.022 arcsec/year
-0.018 arcsec/year

Spectral properties of HR8224

HR8224 belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR8224 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8224. Attribution: Richard Powell / CC BY-SA

HR8224 star system properties

HR8224 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 HR8224 double sysyem:

11.2 arcsec

Alternative designations of HR8224