HR6798

Below the horizon. Rise: 20:56 | Tran: 1:11 | Set: 5:21

Alt: -17.03° Az: 100.66° Direction: South

HR6798 is a multiple main-sequence star of spectral class A4 in the constellation of Sagittarius.

HR6798 visual magnitude is 6.36. Because of its faintness, HR6798 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR6798. The red arrow shows the motion of HR6798 during the next 10000 years (-0.33 arcmin in Right Ascension and -4.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 12m 45s

Declination -19° 50’ 05”

Hour Angle 17h 49m 15s

Sidereal Time 12h 02m 00s

J2000

Right Ascension 18h 11m 14s

Declination -19° 50’ 31”

Galactic Coordinates

Galactic Longitude 10.79°

Galactic Latitude -0.5°

Finder Chart

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Finder chart for HR6798.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.36

Class Main-sequence

Absolute magnitude 1.12

Spectral Type A4V

Color Index (B-V) 0.16

Temperature 8486K

The red dot in the diagram below shows where HR6798 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6798. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6798 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR6798 double sysyem:

Main star magnitude 6.36

Secondary star magnitude 6.76

Magnitude difference 0.4

Separation 1.2 arcsec

Distance, Radial Speed, Proper Motion

HR6798 is distant 364.65 light years from the Sun and it is moving towards the Sun at the speed of 32 kilometers per second.

Distance (parsec) 111.86

Distance (light year) 364.65

Radial Speed -32 km/s

Proper Motion RA -0.002 arcsec/y

Proper Motion Dec -0.028"/y

Alternative Designations

Henry Draper Catalogue HD166393

SAO Catalogue SAO161153

Hipparcos Catalogue HIP89114

Durchmusterung Catalogue BD-19 4886

Aitken Double Star Catalogue ADS11127

Visibility from Your Location

Today's HR6798 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 109.8° RISE 20:56

Max altitude: 18.7° TRANSIT 1:11

Azimuth: 250.2° SET 5:21

Set Location

Other stars in Sagittarius