HR6766

Altitude: 4.3° Azimuth: 210.6° Direction: South-South-West

HR6766 is a double giant star in the constellation of Sagittarius.

HR6766 visual magnitude is 4.57. Because of its moderate brightness, HR6766 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR6766:

Color of HR6766 ⬤

Magnitude of HR6766 4.57

Class Giant

VISIBILITY RIGHT NOW

HR6766 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.3°
Azimuth: 210.6°
Direction: South-South-West

Celestial coordinates and finder chart of HR6766

HR6766 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6766 are provided in the following table:

Right Ascension J2000 18h 08m 04s

Declination J2000 -28° 27’ 25”

Galactic Longitude 2.89°

Galactic Latitude -4.02°

Constellation Sagittarius

The simplified sky map below shows the position of HR6766 in the sky:

Simplified finder chart for HR6766.

Visibility of HR6766 from your location

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

Today's HR6766 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 118.5° RISE 10:16

Max altitude: 10.1° TRANSIT 13:23

Azimuth: 241.5° SET 16:30

Digitized Sky Survey image of HR6766

The image below is a photograph of HR6766 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 HR6766 is 0.027 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6766. The red arrow shows the motion of HR6766 during the next 10000 years (4.50 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR6766 from the Sun and relative movement

HR6766 is distant 347.55 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 106.61 pc

Distance (light year) 347.55 ly

Heliocentric radial velocity -5 km/s

Proper Motion RA 0.027 arcsec/year

Proper Motion Dec -0.03 arcsec/year

Spectral properties of HR6766

HR6766 belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.57

Spectral Type G7III

Color Index (B-V) 0.94

Temperature of HR6766 4892K

The red dot in the diagram below shows where HR6766 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6766. Attribution: Richard Powell / CC BY-SA

HR6766 star system properties

HR6766 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 HR6766 double sysyem:

Main star magnitude 4.57

Secondary star magnitude 5.37

Magnitude difference 0.8

Separation 0.3 arcsec

Alternative designations of HR6766

Henry Draper Catalogue HD165634

SAO Catalogue SAO186328

Hipparcos Catalogue HIP88839

Durchmusterung Catalogue CD-2814174

FK5 Catalogue 3439

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In Evidence

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