σ Centauri (sigma Centauri)

Below the horizon. Never rises today

Alt: -60.64° Az: 253.19° Direction: West-South-West

σ Centauri is a main-sequence star of spectral class B2 in the constellation of Centaurus.

σ Centauri visual magnitude is 3.91. Because of its moderate brightness, σ Centauri is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of σ Centauri (sigma Centauri) star

DSS2 image of σ Centauri. The red arrow shows the motion of σ Centauri during the next 10000 years (-5.00 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 29m 25s

Declination -50° 22’ 14”

Hour Angle 08h 50m 26s

Sidereal Time 21h 19m 52s

J2000

Right Ascension 12h 28m 02s

Declination -50° 13’ 50”

Galactic Coordinates

Galactic Longitude 299.1°

Galactic Latitude 12.47°

Finder Chart

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Finder chart for σ Centauri (sigma Centauri).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.91

Class Main-sequence

Absolute magnitude -1.76

Spectral Type B2V

Color Index (B-V) -0.19

Temperature 13348K

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

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

Distance, Radial Speed, Proper Motion

σ Centauri is distant 442.93 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 135.87

Distance (light year) 442.93

Radial Speed 8 km/s

Proper Motion RA -0.03 arcsec/y

Proper Motion Dec -0.015"/y

Alternative Designations

Bayer designation σ Centauri
(sigma Centauri)

Henry Draper Catalogue HD108483

SAO Catalogue SAO223454

Hipparcos Catalogue HIP60823

Durchmusterung Catalogue CD-49 7115

FK5 Catalogue 464

Visibility from Your Location

σ Centauri (sigma Centauri) is currently not visible from Greenwich, UK

Set Location

Other stars in Centaurus