HR7958

Altitude: 62.4° Azimuth: 83.6° Direction: East

HR7958 is a double main-sequence star in the constellation of Cygnus.

HR7958 visual magnitude is 6.3. Because of its reltive faintness, HR7958 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 HR7958:

Color of HR7958 ⬤

Magnitude of HR7958 6.3

Class Main-sequence

VISIBILITY RIGHT NOW

HR7958 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 62.4°
Azimuth: 83.6°
Direction: East

Celestial coordinates and finder chart of HR7958

HR7958 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 HR7958 are provided in the following table:

Right Ascension J2000 20h 46m 38s

Declination J2000 +46° 31’ 54”

Galactic Longitude 85.83°

Galactic Latitude 2.06°

Constellation Cygnus

The simplified sky map below shows the position of HR7958 in the sky:

Simplified finder chart for HR7958.

Visibility of HR7958 from your location

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

HR7958 is circumpolar and transits at 03:33 UTC (altitude: 85.1°)

Digitized Sky Survey image of HR7958

The image below is a photograph of HR7958 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 HR7958 is -0.024 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7958. The red arrow shows the motion of HR7958 during the next 10000 years (-4.00 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of HR7958 from the Sun and relative movement

HR7958 is distant 413.18 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 126.74 pc

Distance (light year) 413.18 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.024 arcsec/year

Proper Motion Dec -0.013 arcsec/year

Spectral properties of HR7958

HR7958 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.79

Spectral Type A3V

Color Index (B-V) 0.03

Temperature of HR7958 9766K

The red dot in the diagram below shows where HR7958 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7958. Attribution: Richard Powell / CC BY-SA

HR7958 star system properties

HR7958 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 HR7958 double sysyem:

Main star magnitude 6.3

Secondary star magnitude 8.2

Magnitude difference 1.9

Separation 0.5 arcsec

Alternative designations of HR7958

Henry Draper Catalogue HD198151

SAO Catalogue SAO50050

Hipparcos Catalogue HIP102530

Durchmusterung Catalogue BD+45 3270

In Evidence

Other stars in Cygnus