HR7972

Above the horizon. Circumpolar today

Alt: 14.04° Az: 357.27° Direction: North

HR7972 is a double sub-giant star of spectral class G7 in the constellation of Cygnus.

HR7972 visual magnitude is 6.27. Because of its faintness, HR7972 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR7972. The red arrow shows the motion of HR7972 during the next 1000 years (1.13 arcmin in Right Ascension and -2.63 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 48m 36s

Declination +52° 29’ 58”

Hour Angle 11h 42m 36s

Sideral Time 08h 31m 13s

J2000

Right Ascension 20h 47m 52s

Declination +52° 24’ 25”

Galactic Coordinates

Galactic Longitude 90.55°

Galactic Latitude 5.58°

Finder Chart

Simplified finder chart for HR7972.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.27

Class Sub-giant

Absolute magnitude 3.16

Spectral Type G7IV

Color Index (B-V) 0.89

Temperature 5023K

The red dot in the diagram below shows where HR7972 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7972. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7972 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR7972 double sysyem:

Main star magnitude 6.27

Secondary star magnitude 11.47

Magnitude difference 5.2

Separation 12.2 arcsec

Distance, Radial Speed, Proper Motion

HR7972 is distant 136.52 light years from the Sun and it is moving towards the Sun at the speed of 41 kilometers per second.

Distance (parsec) 41.88

Distance (light year) 136.52

Radial Speed -41 km/s

Proper Motion RA 0.068 arcsec/y

Proper Motion Dec -0.158"/y

Alternative Designations

Henry Draper Catalogue HD198387

SAO Catalogue SAO32897

Hipparcos Catalogue HIP102642

Durchmusterung Catalogue BD+51 2954

Aitken Double Star Catalogue ADS14322

Visibility from Your Location

HR7972 is circumpolar and transits at 19:48 UTC (altitude: 89.0°)

Set Location

Other stars in Cygnus