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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: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 46.4°   Azimuth: 12.2°   Direction: North-North-East

HR8239 is a giant star in the constellation of Cepheus.

HR8239 visual magnitude is 5.97. Because of its reltive faintness, HR8239 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 HR8239:


HR8239 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 46.4°
Azimuth: 12.2°
Direction: North-North-East

Celestial coordinates and finder chart of HR8239

HR8239 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 HR8239 are provided in the following table:

21h 24m 49s
+80° 31’ 28”

The simplified sky map below shows the position of HR8239 in the sky:

Finder chart HR8239 star
Simplified finder chart for HR8239.

Visibility of HR8239 from your location

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

HR8239 is circumpolar and transits at 16:51 UTC (altitude: 61.0°)

Digitized Sky Survey image of HR8239

The image below is a photograph of HR8239 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 HR8239 is 0.044 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8239 star
DSS2 image of HR8239. The red arrow shows the motion of HR8239 during the next 10000 years (7.33 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of HR8239 from the Sun and relative movement

HR8239 is distant 355.12 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

108.93 pc
355.12 ly
3 km/s
0.044 arcsec/year
-0.016 arcsec/year

Spectral properties of HR8239

HR8239 belongs to spectral class G6


The red dot in the diagram below shows where HR8239 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8239. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8239