HR7922

Altitude: 77.6° Azimuth: 185.1° Direction: South

HR7922 is a double giant star in the constellation of Cygnus.

HR7922 visual magnitude is 6.51. Because of its reltive faintness, HR7922 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 HR7922:

Color of HR7922 ⬤

Magnitude of HR7922 6.51

Class Giant

VISIBILITY RIGHT NOW

HR7922 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 77.6°
Azimuth: 185.1°
Direction: South

Celestial coordinates and finder chart of HR7922

HR7922 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 HR7922 are provided in the following table:

Right Ascension J2000 20h 41m 00s

Declination J2000 +39° 04’ 55”

Galactic Longitude 79.34°

Galactic Latitude -1.74°

Constellation Cygnus

The simplified sky map below shows the position of HR7922 in the sky:

Simplified finder chart for HR7922.

Visibility of HR7922 from your location

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

HR7922 is circumpolar and transits at 03:31 UTC (altitude: 77.6°)

Digitized Sky Survey image of HR7922

The image below is a photograph of HR7922 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 HR7922 is 0.007 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR7922. The red arrow shows the motion of HR7922 during the next 100000 years (11.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR7922 from the Sun and relative movement

HR7922 is distant 1,015.58 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 311.53 pc

Distance (light year) 1,015.58 ly

Heliocentric radial velocity -15 km/s

Proper Motion RA 0.007 arcsec/year

Spectral properties of HR7922

HR7922 belongs to spectral class B6 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.96

Spectral Type B6III

Color Index (B-V) -0.12

Temperature of HR7922 11920K

The red dot in the diagram below shows where HR7922 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7922. Attribution: Richard Powell / CC BY-SA

HR7922 star system properties

HR7922 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR7922 double sysyem:

Main star magnitude 6.51

Secondary star magnitude 9.81

Magnitude difference 3.3

Separation 48.3 arcsec

Alternative designations of HR7922

Henry Draper Catalogue HD197226

SAO Catalogue SAO70367

Hipparcos Catalogue HIP102062

Durchmusterung Catalogue BD+38 4187

FK5 Catalogue 3653

In Evidence

Other stars in Cygnus