HR129

Above the horizon. Circumpolar today

Alt: 32.95° Az: 4.94° Direction: North

HR129 is a hypergiant star of spectral class A0 in the constellation of Cassiopeia.

HR129 visual magnitude is 6.42. Because of its faintness, HR129 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 HR129. The red arrow shows the motion of HR129 during the next 10000 years (4.67 arcmin in Right Ascension and -0.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 34m 51s

Declination +71° 07’ 16”

Hour Angle 12h 51m 38s

Sidereal Time 13h 26m 30s

J2000

Right Ascension 00h 33m 19s

Declination +70° 58’ 54”

Galactic Coordinates

Galactic Longitude 121.44°

Galactic Latitude 8.16°

Finder Chart

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Finder chart for HR129.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.42

Class Hypergiant

Absolute magnitude 0.37

Spectral Type A0V

Color Index (B-V) -0.01

Temperature 10252K

The red dot in the diagram below shows where HR129 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR129. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR129 is distant 527.51 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 161.81

Distance (light year) 527.51

Radial Speed -10 km/s

Proper Motion RA 0.028 arcsec/y

Proper Motion Dec -0.004"/y

Alternative Designations

Henry Draper Catalogue HD2904

SAO Catalogue SAO4142

Hipparcos Catalogue HIP2628

Durchmusterung Catalogue BD+70 24

FK5 Catalogue 2034

Visibility from Your Location

HR129 is circumpolar and transits at 09:01 UTC (altitude: 70.4°)

Set Location

Other stars in Cassiopeia