HR6635

Below the horizon. Never rises today

Alt: -64.75° Az: 187.48° Direction: South

HR6635 is a double giant star of spectral class K2 in the constellation of Apus.

HR6635 visual magnitude is 6.07. Because of its faintness, HR6635 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 HR6635. The red arrow shows the motion of HR6635 during the next 10000 years (0.33 arcmin in Right Ascension and 2.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 01m 12s

Declination -76° 10’ 40”

Hour Angle 11h 06m 12s

Sideral Time 05h 07m 25s

J2000

Right Ascension 17h 57m 41s

Declination -76° 10’ 38”

Galactic Coordinates

Galactic Longitude 317.57°

Galactic Latitude -23.16°

Finder Chart

Simplified finder chart for HR6635.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.07

Class Giant

Absolute magnitude -0.24

Spectral Type K2III

Color Index (B-V) 1.2

Temperature 4309K

The red dot in the diagram below shows where HR6635 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6635. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6635 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 HR6635 double sysyem:

Main star magnitude 6.07

Secondary star magnitude 13.97

Magnitude difference 7.9

Separation 25.5 arcsec

Distance, Radial Speed, Proper Motion

HR6635 is distant 594.89 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

Distance (parsec) 182.48

Distance (light year) 594.89

Radial Speed 37 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec 0.017"/y

Alternative Designations

Henry Draper Catalogue HD161988

SAO Catalogue SAO257542

Hipparcos Catalogue HIP87926

Durchmusterung Catalogue CP-76 1226

Visibility from Your Location

HR6635 is currently not visible from Greenwich, UK

Set Location

Other stars in Apus