HR7983

Altitude: 41.7° Azimuth: 296.4° Direction: West-North-West

HR7983 is a double main-sequence star in the constellation of Cygnus.

HR7983 visual magnitude is 6.33. Because of its reltive faintness, HR7983 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 HR7983:

Color of HR7983 ⬤

Magnitude of HR7983 6.33

Class Main-sequence

VISIBILITY RIGHT NOW

HR7983 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 41.7°
Azimuth: 296.4°
Direction: West-North-West

Celestial coordinates and finder chart of HR7983

HR7983 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 HR7983 are provided in the following table:

Right Ascension J2000 20h 49m 54s

Declination J2000 +46° 39’ 39”

Galactic Longitude 86.28°

Galactic Latitude 1.71°

Constellation Cygnus

The simplified sky map below shows the position of HR7983 in the sky:

Simplified finder chart for HR7983.

Visibility of HR7983 from your location

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

HR7983 is circumpolar and transits at 15:37 UTC (altitude: 85.2°)

Digitized Sky Survey image of HR7983

The image below is a photograph of HR7983 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 HR7983 is 0.008 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 HR7983. The red arrow shows the motion of HR7983 during the next 100000 years (13.33 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR7983 from the Sun and relative movement

HR7983 is distant 918.31 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 281.69 pc

Distance (light year) 918.31 ly

Heliocentric radial velocity -15 km/s

Proper Motion RA 0.008 arcsec/year

Spectral properties of HR7983

HR7983 belongs to spectral class B4 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.92

Spectral Type B4V

Color Index (B-V) -0.07

Temperature of HR7983 11092K

The red dot in the diagram below shows where HR7983 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7983. Attribution: Richard Powell / CC BY-SA

HR7983 star system properties

HR7983 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 HR7983 double sysyem:

Main star magnitude 6.33

Secondary star magnitude 11.63

Magnitude difference 5.3

Separation 19.2 arcsec

Alternative designations of HR7983

Henry Draper Catalogue HD198625

SAO Catalogue SAO50119

Hipparcos Catalogue HIP102827

Durchmusterung Catalogue BD+46 3067

Aitken Double Star Catalogue ADS14350

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In Evidence

Other stars in Cygnus