HR3797

HR3797 is a hypergiant star in the constellation of Ursa Major.

HR3797 visual magnitude is 6.52. Because of its reltive faintness, HR3797 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 HR3797:

Color of HR3797 ⬤

Magnitude of HR3797 6.52

Class Hypergiant

VISIBILITY RIGHT NOW HR3797 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 84°.

Celestial coordinates and finder chart of HR3797

HR3797 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 HR3797 are provided in the following table:

Right Ascension J2000 09h 34m 19s

Declination J2000 +46° 54’ 07”

Galactic Longitude 172.15°

Galactic Latitude 46.86°

Constellation Ursa Major

The simplified sky map below shows the position of HR3797 in the sky:

Simplified finder chart for HR3797.

Visibility of HR3797 from your location

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

HR3797 is circumpolar and transits at 21:10 UTC (altitude: 85.4°)

Digitized Sky Survey image of HR3797

The image below is a photograph of HR3797 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 HR3797 is -0.062 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3797. The red arrow shows the motion of HR3797 during the next 10000 years (-10.33 arcmin in Right Ascension and -1.33 arcmin in declination);

Distance of HR3797 from the Sun and relative movement

HR3797 is distant 307.55 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

Distance (parsec) 94.34 pc

Distance (light year) 307.55 ly

Heliocentric radial velocity 11 km/s

Proper Motion RA -0.062 arcsec/year

Proper Motion Dec -0.008 arcsec/year

Spectral properties of HR3797

HR3797 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 1.65

Spectral Type F0V

Color Index (B-V) 0.22

Temperature of HR3797 8011K

The red dot in the diagram below shows where HR3797 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3797. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3797

Henry Draper Catalogue HD82582

SAO Catalogue SAO42924

Hipparcos Catalogue HIP46963

Durchmusterung Catalogue BD+47 1683

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In Evidence

Other stars in Ursa Major