HR8201

Below the horizon. Never rises today

Alt: -55.38° Az: 164.36° Direction: South

HR8201 is a double hypergiant star of spectral class A0 in the constellation of Octans.

HR8201 visual magnitude is 6.47. Because of its faintness, HR8201 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 HR8201. The red arrow shows the motion of HR8201 during the next 10000 years (1.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 21h 36m 32s

Declination -79° 55’ 29”

Hour Angle 16h 04m 31s

Sidereal Time 13h 41m 04s

J2000

Right Ascension 21h 33m 20s

Declination -80° 02’ 21”

Galactic Coordinates

Galactic Longitude 311.99°

Galactic Latitude -33.3°

Finder Chart

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Finder chart for HR8201.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.47

Class Hypergiant

Absolute magnitude 1.25

Spectral Type A0V

Color Index (B-V) 0.04

Temperature 9652K

The red dot in the diagram below shows where HR8201 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8201. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR8201 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 HR8201 double sysyem:

Main star magnitude 6.47

Secondary star magnitude 11.27

Magnitude difference 4.8

Separation 24.4 arcsec

Distance, Radial Speed, Proper Motion

HR8201 is distant 360.22 light years from the Sun and it is moving far from the Sun at the speed of 21 kilometers per second.

Distance (parsec) 110.50

Distance (light year) 360.22

Radial Speed 21 km/s

Proper Motion RA 0.006 arcsec/y

Proper Motion Dec -0.012"/y

Alternative Designations

Henry Draper Catalogue HD203955

SAO Catalogue SAO258904

Hipparcos Catalogue HIP106424

Durchmusterung Catalogue CP-80 1017

Visibility from Your Location

HR8201 is currently not visible from Greenwich, UK

Set Location

Other stars in Octans