HR5798

Below the horizon. Never rises today

Alt: -23.61° Az: 147.17° Direction: South

HR5798 is a multiple hypergiant star of spectral class A0 in the constellation of Norma.

HR5798 visual magnitude is 5.44. Because of its faintness, HR5798 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 HR5798. The red arrow shows the motion of HR5798 during the next 10000 years (-6.00 arcmin in Right Ascension and -5.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 40m 44s

Declination -52° 27’ 15”

Hour Angle 20h 21m 33s

Sidereal Time 12h 02m 17s

J2000

Right Ascension 15h 38m 49s

Declination -52° 22’ 22”

Galactic Coordinates

Galactic Longitude 326.99°

Galactic Latitude 2.5°

Finder Chart

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Finder chart for HR5798.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.44

Class Hypergiant

Absolute magnitude -0.29

Spectral Type A0V

Color Index (B-V) 0

Temperature 10125K

The red dot in the diagram below shows where HR5798 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR5798. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR5798 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR5798 double sysyem:

Main star magnitude 5.44

Secondary star magnitude 9.94

Magnitude difference 4.5

Separation 53.4 arcsec

Distance, Radial Speed, Proper Motion

HR5798 is distant 457.22 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 140.25

Distance (light year) 457.22

Radial Speed -12 km/s

Proper Motion RA -0.036 arcsec/y

Proper Motion Dec -0.035"/y

Alternative Designations

Henry Draper Catalogue HD139129

SAO Catalogue SAO242793

Hipparcos Catalogue HIP76618

Durchmusterung Catalogue CD-51 9324

FK5 Catalogue 1411

Visibility from Your Location

HR5798 is currently not visible from Greenwich, UK

Set Location

Other stars in Norma