σ2 Gruis (sigma2 Gruis)

Below the horizon. Never rises today

Alt: -24.85° Az: 235.49° Direction: South-West

σ2 Gruis is a double main-sequence star of spectral class A1 in the constellation of Grus.

σ2 Gruis visual magnitude is 5.86. Because of its faintness, σ2 Gruis 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 σ2 Gruis. The red arrow shows the motion of σ2 Gruis during the next 10000 years (6.33 arcmin in Right Ascension and -12.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 38m 27s

Declination -40° 27’ 31”

Hour Angle 05h 17m 26s

Sidereal Time 03h 55m 53s

J2000

Right Ascension 22h 36m 58s

Declination -40° 35’ 27”

Galactic Coordinates

Galactic Longitude 358.27°

Galactic Latitude -59.26°

Finder Chart

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Finder chart for σ2 Gruis (sigma2 Gruis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.86

Class Main-sequence

Absolute magnitude 1.72

Spectral Type A1V

Color Index (B-V) 0.06

Temperature 9434K

The red dot in the diagram below shows where σ2 Gruis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of σ2 Gruis. Attribution: Richard Powell / CC BY-SA

Star System Properties

σ2 Gruis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the σ2 Gruis double sysyem:

Main star magnitude 5.86

Secondary star magnitude 11.06

Magnitude difference 5.2

Separation 2.8 arcsec

Distance, Radial Speed, Proper Motion

σ2 Gruis is distant 219.38 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 67.29

Distance (light year) 219.38

Radial Speed 15 km/s

Proper Motion RA 0.038 arcsec/y

Proper Motion Dec -0.075"/y

Alternative Designations

Bayer designation σ2 Gruis
(sigma2 Gruis)

Henry Draper Catalogue HD214150

SAO Catalogue SAO231217

Hipparcos Catalogue HIP111643

Durchmusterung Catalogue CD-4114963

Visibility from Your Location

σ2 Gruis (sigma2 Gruis) is currently not visible from Greenwich, UK

Set Location

Other stars in Grus