HR6790

Altitude: 26.3° Azimuth: 320.2° Direction: North-West

HR6790 is a hypergiant star in the constellation of Draco.

HR6790 visual magnitude is 6.29. Because of its reltive faintness, HR6790 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 HR6790:

Color of HR6790 ⬤

Magnitude of HR6790 6.29

Class Hypergiant

VISIBILITY RIGHT NOW

HR6790 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 26.3°
Azimuth: 320.2°
Direction: North-West

Celestial coordinates and finder chart of HR6790

HR6790 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 HR6790 are provided in the following table:

Right Ascension J2000 18h 06m 53s

Declination J2000 +50° 49’ 22”

Galactic Longitude 78.59°

Galactic Latitude 27.52°

Constellation Draco

The simplified sky map below shows the position of HR6790 in the sky:

Simplified finder chart for HR6790.

Visibility of HR6790 from your location

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

HR6790 is circumpolar and transits at 13:14 UTC (altitude: 89.3°)

Digitized Sky Survey image of HR6790

The image below is a photograph of HR6790 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 HR6790 is 0.002 arcsec per year in Right Ascension and 0.096 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR6790. The red arrow shows the motion of HR6790 during the next 1000 years (0.03 arcmin in Right Ascension and 1.60 arcmin in declination);

Distance of HR6790 from the Sun and relative movement

HR6790 is distant 385.80 light years from the Sun and it is moving towards the Sun at the speed of 57 kilometers per second.

Distance (parsec) 118.34 pc

Distance (light year) 385.80 ly

Heliocentric radial velocity -57 km/s

Proper Motion RA 0.002 arcsec/year

Proper Motion Dec 0.096 arcsec/year

Spectral properties of HR6790

HR6790 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.92

Spectral Type K0III

Color Index (B-V) 1.04

Temperature of HR6790 4649K

The red dot in the diagram below shows where HR6790 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6790. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6790

Henry Draper Catalogue HD166207

SAO Catalogue SAO30751

Hipparcos Catalogue HIP88732

Durchmusterung Catalogue BD+50 2525

FK5 Catalogue 3441

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In Evidence

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