HR6731

Below the horizon. Never rises today

Alt: -60.92° Az: 199.10° Direction: South-South-West

HR6731 is a double giant star of spectral class K2 in the constellation of Apus.

HR6731 visual magnitude is 5.86. Because of its faintness, HR6731 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 HR6731. The red arrow shows the motion of HR6731 during the next 1000 years (0.17 arcmin in Right Ascension and -4.92 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 14m 43s

Declination -75° 53’ 00”

Hour Angle 09h 17m 09s

Sideral Time 03h 31m 52s

J2000

Right Ascension 18h 11m 15s

Declination -75° 53’ 29”

Galactic Coordinates

Galactic Longitude 318.15°

Galactic Latitude -23.85°

Finder Chart

Simplified finder chart for HR6731.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.86

Class Giant

Absolute magnitude 1.41

Spectral Type K2III

Color Index (B-V) 1.24

Temperature 4232K

The red dot in the diagram below shows where HR6731 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6731. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6731 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 HR6731 double sysyem:

Main star magnitude 5.86

Secondary star magnitude 13.16

Magnitude difference 7.3

Separation 25.9 arcsec

Distance, Radial Speed, Proper Motion

HR6731 is distant 253.11 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 77.64

Distance (light year) 253.11

Radial Speed 15 km/s

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.295"/y

Alternative Designations

Henry Draper Catalogue HD164712

SAO Catalogue SAO257569

Hipparcos Catalogue HIP89115

Durchmusterung Catalogue CP-75 1410

FK5 Catalogue 678

Visibility from Your Location

HR6731 is currently not visible from Greenwich, UK

Set Location

Other stars in Apus