HR7930

Altitude: 53.7° Azimuth: 350.1° Direction: North

HR7930 is a main-sequence star in the constellation of Draco.

HR7930 visual magnitude is 6.19. Because of its reltive faintness, HR7930 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 HR7930:

Color of HR7930 ⬤

Magnitude of HR7930 6.19

Class Main-sequence

VISIBILITY RIGHT NOW

HR7930 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 53.7°
Azimuth: 350.1°
Direction: North

Celestial coordinates and finder chart of HR7930

HR7930 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7930 are provided in the following table:

Right Ascension J2000 20h 29m 03s

Declination J2000 +83° 37’ 32”

Galactic Longitude 116.56°

Galactic Latitude 24.35°

Constellation Draco

The simplified sky map below shows the position of HR7930 in the sky:

Simplified finder chart for HR7930.

Visibility of HR7930 from your location

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

HR7930 is circumpolar and transits at 15:40 UTC (altitude: 57.9°)

Digitized Sky Survey image of HR7930

The image below is a photograph of HR7930 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 HR7930 is 0.025 arcsec per year in Right Ascension and -0.017 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7930. The red arrow shows the motion of HR7930 during the next 10000 years (4.17 arcmin in Right Ascension and -2.83 arcmin in declination);

Distance of HR7930 from the Sun and relative movement

HR7930 is distant 276.98 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

Distance (parsec) 84.96 pc

Distance (light year) 276.98 ly

Heliocentric radial velocity 10 km/s

Proper Motion RA 0.025 arcsec/year

Proper Motion Dec -0.017 arcsec/year

Spectral properties of HR7930

HR7930 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.54

Spectral Type A3V

Color Index (B-V) 0.13

Temperature of HR7930 8748K

The red dot in the diagram below shows where HR7930 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7930. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7930

Henry Draper Catalogue HD197508

SAO Catalogue SAO3418

Hipparcos Catalogue HIP101044

Durchmusterung Catalogue BD+83 588

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In Evidence

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