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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: 7:45  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 44.6°   Azimuth: 322.3°   Direction: North-West

HR8811 is a hypergiant star in the constellation of Cepheus.

HR8811 visual magnitude is 6.21. Because of its reltive faintness, HR8811 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 HR8811:


HR8811 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 44.6°
Azimuth: 322.3°
Direction: North-West

Celestial coordinates and finder chart of HR8811

HR8811 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 HR8811 are provided in the following table:

23h 07m 57s
+64° 13’ 20”

The simplified sky map below shows the position of HR8811 in the sky:

Finder chart HR8811 star
Simplified finder chart for HR8811.

Visibility of HR8811 from your location

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

HR8811 is circumpolar and transits at 18:14 UTC (altitude: 77.3°)

Digitized Sky Survey image of HR8811

The image below is a photograph of HR8811 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 HR8811 is 0.01 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8811 star
DSS2 image of HR8811. The red arrow shows the motion of HR8811 during the next 10000 years (1.67 arcmin in Right Ascension and 0.17 arcmin in declination);

Distance of HR8811 from the Sun and relative movement

HR8811 is distant 1,065.36 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

326.80 pc
1,065.36 ly
-28 km/s
0.01 arcsec/year
0.001 arcsec/year

Spectral properties of HR8811

HR8811 belongs to spectral class K0


The red dot in the diagram below shows where HR8811 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8811. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8811