HR8107

Altitude: 70.5° Azimuth: 270.5° Direction: West

HR8107 is a multiple sub-giant star in the constellation of Cygnus.

HR8107 visual magnitude is 6.46. Because of its reltive faintness, HR8107 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 HR8107:

Color of HR8107 ⬤

Magnitude of HR8107 6.46

Class Sub-giant

VISIBILITY RIGHT NOW

HR8107 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 70.5°
Azimuth: 270.5°
Direction: West

Celestial coordinates and finder chart of HR8107

HR8107 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 HR8107 are provided in the following table:

Right Ascension J2000 21h 10m 31s

Declination J2000 +47° 41’ 30”

Galactic Longitude 89.36°

Galactic Latitude -0.25°

Constellation Cygnus

The simplified sky map below shows the position of HR8107 in the sky:

Simplified finder chart for HR8107.

Visibility of HR8107 from your location

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

HR8107 is circumpolar and transits at 15:57 UTC (altitude: 86.2°)

Digitized Sky Survey image of HR8107

The image below is a photograph of HR8107 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 HR8107 is 0.004 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR8107. The red arrow shows the motion of HR8107 during the next 100000 years (6.67 arcmin in Right Ascension and -11.67 arcmin in declination);

Distance of HR8107 from the Sun and relative movement

HR8107 is distant 1,502.30 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 460.83 pc

Distance (light year) 1,502.30 ly

Heliocentric radial velocity -9 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec -0.007 arcsec/year

Spectral properties of HR8107

HR8107 belongs to spectral class B6 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -1.86

Spectral Type B6IV

Color Index (B-V) -0.01

Temperature of HR8107 10252K

The red dot in the diagram below shows where HR8107 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8107. Attribution: Richard Powell / CC BY-SA

HR8107 star system properties

HR8107 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR8107 double sysyem:

Main star magnitude 6.46

Secondary star magnitude 7.26

Magnitude difference 0.8

Separation 136.1 arcsec

Alternative designations of HR8107

Henry Draper Catalogue HD201836

SAO Catalogue SAO50536

Hipparcos Catalogue HIP104537

Durchmusterung Catalogue BD+47 3322

Aitken Double Star Catalogue ADS14720

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In Evidence

Other stars in Cygnus