HR8020

HR8020 is a supergiant star in the constellation of Cygnus.

HR8020 visual magnitude is 5.67. Because of its reltive faintness, HR8020 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 HR8020:

Color of HR8020 ⬤

Magnitude of HR8020 5.67

Class Supergiant

VISIBILITY RIGHT NOW HR8020 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 61°.

Celestial coordinates and finder chart of HR8020

HR8020 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 HR8020 are provided in the following table:

Right Ascension J2000 20h 55m 49s

Declination J2000 +47° 25’ 04”

Galactic Longitude 87.51°

Galactic Latitude 1.42°

Constellation Cygnus

The simplified sky map below shows the position of HR8020 in the sky:

Simplified finder chart for HR8020.

Visibility of HR8020 from your location

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

HR8020 is circumpolar and transits at 08:53 UTC (altitude: 85.9°)

Digitized Sky Survey image of HR8020

The image below is a photograph of HR8020 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 HR8020 is -0.003 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR8020. The red arrow shows the motion of HR8020 during the next 100000 years (-5.00 arcmin in Right Ascension and -3.33 arcmin in declination);

Distance of HR8020 from the Sun and relative movement

HR8020 is distant 9,314.29 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 2,857.14 pc

Distance (light year) 9,314.29 ly

Heliocentric radial velocity -15 km/s

Proper Motion RA -0.003 arcsec/year

Proper Motion Dec -0.002 arcsec/year

Spectral properties of HR8020

HR8020 belongs to spectral class B8 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -6.61

Spectral Type B8I

Color Index (B-V) 0.47

Temperature of HR8020 6528K

The red dot in the diagram below shows where HR8020 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8020. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8020

Henry Draper Catalogue HD199478

SAO Catalogue SAO50246

Hipparcos Catalogue HIP103312

Durchmusterung Catalogue BD+46 3111

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In Evidence

Other stars in Cygnus