HR7531

Below the horizon. Never rises today

Alt: -52.90° Az: 128.59° Direction: South-East

HR7531 is a double hypergiant star of spectral class A0 in the constellation of Pavo.

HR7531 visual magnitude is 5.42. Because of its faintness, HR7531 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 HR7531. The red arrow shows the motion of HR7531 during the next 10000 years (2.50 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 52m 49s

Declination -59° 07’ 42”

Hour Angle 16h 27m 05s

Sideral Time 12h 19m 55s

J2000

Right Ascension 19h 50m 44s

Declination -59° 11’ 35”

Galactic Coordinates

Galactic Longitude 338.02°

Galactic Latitude -30.55°

Finder Chart

Simplified finder chart for HR7531.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.42

Class Hypergiant

Absolute magnitude 0.91

Spectral Type A0IV

Color Index (B-V) 0.08

Temperature 9226K

The red dot in the diagram below shows where HR7531 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7531. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7531 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 HR7531 double sysyem:

Main star magnitude 5.42

Secondary star magnitude 6.92

Magnitude difference 1.5

Separation 0.5 arcsec

Distance, Radial Speed, Proper Motion

HR7531 is distant 259.76 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 79.68

Distance (light year) 259.76

Radial Speed 4 km/s

Proper Motion RA 0.015 arcsec/y

Proper Motion Dec 0.004"/y

Alternative Designations

Henry Draper Catalogue HD186957

SAO Catalogue SAO246293

Hipparcos Catalogue HIP97646

Durchmusterung Catalogue CP-59 7534

Visibility from Your Location

HR7531 is currently not visible from Greenwich, UK

Set Location

Other stars in Pavo