HR8218

HR8218 is a main-sequence star in the constellation of Cygnus.

HR8218 visual magnitude is 6.03. Because of its reltive faintness, HR8218 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 HR8218:

Color of HR8218 ⬤

Magnitude of HR8218 6.03

Class Main-sequence

VISIBILITY RIGHT NOW HR8218 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 45°.

Celestial coordinates and finder chart of HR8218

HR8218 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 HR8218 are provided in the following table:

Right Ascension J2000 21h 26m 44s

Declination J2000 +52° 53’ 54”

Galactic Longitude 94.89°

Galactic Latitude 1.55°

Constellation Cygnus

The simplified sky map below shows the position of HR8218 in the sky:

Simplified finder chart for HR8218.

Visibility of HR8218 from your location

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

HR8218 is circumpolar and transits at 09:16 UTC (altitude: 88.6°)

Digitized Sky Survey image of HR8218

The image below is a photograph of HR8218 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 HR8218 is 0.017 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR8218. The red arrow shows the motion of HR8218 during the next 10000 years (2.83 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of HR8218 from the Sun and relative movement

HR8218 is distant 441.73 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

Distance (parsec) 135.50 pc

Distance (light year) 441.73 ly

Heliocentric radial velocity -30 km/s

Proper Motion RA 0.017 arcsec/year

Proper Motion Dec 0.008 arcsec/year

Spectral properties of HR8218

HR8218 belongs to spectral class B6 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.37

Spectral Type B6V

Color Index (B-V) -0.12

Temperature of HR8218 11920K

The red dot in the diagram below shows where HR8218 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8218. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8218

Henry Draper Catalogue HD204428

SAO Catalogue SAO33434

Hipparcos Catalogue HIP105891

Durchmusterung Catalogue BD+52 2939

How to support us

In Evidence

Other stars in Cygnus