HR8811

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:

Color of HR8811 ⬤

Magnitude of HR8811 6.21

Class Hypergiant

VISIBILITY RIGHT NOW HR8811 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 63°.

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:

Right Ascension J2000 23h 07m 57s

Declination J2000 +64° 13’ 20”

Galactic Longitude 111.97°

Galactic Latitude 3.58°

Constellation Cepheus

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

Simplified finder chart for HR8811.

Visibility of HR8811 from your location

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

HR8811 is circumpolar and transits at 10:49 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.

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.

Distance (parsec) 326.80 pc

Distance (light year) 1,065.36 ly

Heliocentric radial velocity -28 km/s

Proper Motion RA 0.01 arcsec/year

Proper Motion Dec 0.001 arcsec/year

Spectral properties of HR8811

HR8811 belongs to spectral class K0

Absolute magnitude -1.36

Spectral Type K0

Color Index (B-V) 1.1

Temperature of HR8811 4515K

The red dot in the diagram below shows where HR8811 is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of HR8811

Henry Draper Catalogue HD218560

SAO Catalogue SAO20441

Hipparcos Catalogue HIP114227

Durchmusterung Catalogue BD+63 1931

FK5 Catalogue 3853

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In Evidence

Other stars in Cepheus