HR7969

HR7969 is a double giant star in the constellation of Cygnus.

HR7969 visual magnitude is 5.57. Because of its reltive faintness, HR7969 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 HR7969:

Color of HR7969 ⬤

Magnitude of HR7969 5.57

Class Giant

VISIBILITY RIGHT NOW HR7969 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 10°.

Celestial coordinates and finder chart of HR7969

HR7969 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 HR7969 are provided in the following table:

Right Ascension J2000 20h 47m 49s

Declination J2000 +47° 49’ 54”

Galactic Longitude 86.97°

Galactic Latitude 2.72°

Constellation Cygnus

The simplified sky map below shows the position of HR7969 in the sky:

Simplified finder chart for HR7969.

Visibility of HR7969 from your location

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

HR7969 is circumpolar and transits at 04:02 UTC (altitude: 86.4°)

Digitized Sky Survey image of HR7969

The image below is a photograph of HR7969 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 HR7969 is -0.006 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7969. The red arrow shows the motion of HR7969 during the next 10000 years (-1.00 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR7969 from the Sun and relative movement

HR7969 is distant 537.95 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

Distance (parsec) 165.02 pc

Distance (light year) 537.95 ly

Heliocentric radial velocity -30 km/s

Proper Motion RA -0.006 arcsec/year

Proper Motion Dec -0.015 arcsec/year

Spectral properties of HR7969

HR7969 belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.52

Spectral Type K5III

Color Index (B-V) 1.46

Temperature of HR7969 3855K

The red dot in the diagram below shows where HR7969 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7969. Attribution: Richard Powell / CC BY-SA

HR7969 star system properties

HR7969 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7969 double sysyem:

Main star magnitude 5.57

Secondary star magnitude 14.57

Magnitude difference 9

Separation 18.3 arcsec

Alternative designations of HR7969

Henry Draper Catalogue HD198345

SAO Catalogue SAO50073

Hipparcos Catalogue HIP102635

Durchmusterung Catalogue BD+47 3188

FK5 Catalogue 3662

Aitken Double Star Catalogue ADS14318

In Evidence

Other stars in Cygnus