HR7956

Altitude: 40.4° Azimuth: 83.0° Direction: East

HR7956 is a variable and multiple giant star in the constellation of Cygnus.

HR7956 visual magnitude is 4.92. Because of its moderate brightness, HR7956 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR7956:

Color of HR7956 ⬤

Magnitude of HR7956 4.92

Class Giant

VISIBILITY RIGHT NOW

HR7956 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 40.4°
Azimuth: 83.0°
Direction: East

Celestial coordinates and finder chart of HR7956

HR7956 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 HR7956 are provided in the following table:

Right Ascension J2000 20h 47m 10s

Declination J2000 +34° 22’ 27”

Galactic Longitude 76.39°

Galactic Latitude -5.62°

Constellation Cygnus

The simplified sky map below shows the position of HR7956 in the sky:

Simplified finder chart for HR7956.

Visibility of HR7956 from your location

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

Today's HR7956 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 55.6° RISE 11:51

Max altitude: 72.9° TRANSIT 21:45

Azimuth: 304.4° SET 7:42

Digitized Sky Survey image of HR7956

The image below is a photograph of HR7956 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 HR7956 is 0.047 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7956. The red arrow shows the motion of HR7956 during the next 10000 years (7.83 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR7956 from the Sun and relative movement

HR7956 is distant 398.53 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

Distance (parsec) 122.25 pc

Distance (light year) 398.53 ly

Heliocentric radial velocity -23 km/s

Proper Motion RA 0.047 arcsec/year

Proper Motion Dec 0.004 arcsec/year

Spectral properties of HR7956

HR7956 belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.52

Spectral Type K3III

Color Index (B-V) 1.32

Temperature of HR7956 4086K

The red dot in the diagram below shows where HR7956 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7956. Attribution: Richard Powell / CC BY-SA

HR7956 star system properties

HR7956 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 HR7956 double sysyem:

Main star magnitude 4.92

Secondary star magnitude 11.42

Magnitude difference 6.5

Separation 9.9 arcsec

Alternative designations of HR7956

Henry Draper Catalogue HD198134

SAO Catalogue SAO70499

Hipparcos Catalogue HIP102571

Durchmusterung Catalogue BD+33 4028

General Catalogue of Variable Stars T Cyg

Aitken Double Star Catalogue ADS14290

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