22 Scorpii

Below the horizon. Rise: 21:46 | Tran: 1:24 | Set: 4:58

Alt: -1.46° Az: 229.38° Direction: South-West

22 Scorpii is a main-sequence star of spectral class B2 in the constellation of Scorpius.

22 Scorpii visual magnitude is 4.79. Because of its moderate brightness, 22 Scorpii 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.

DSS2 image of 22 Scorpii. The red arrow shows the motion of 22 Scorpii during the next 10000 years (-1.33 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 31m 45s

Declination -25° 10’ 06”

Hour Angle 03h 47m 52s

Sidereal Time 20h 19m 37s

J2000

Right Ascension 16h 30m 12s

Declination -25° 06’ 53”

Galactic Coordinates

Galactic Longitude 353.1°

Galactic Latitude 15.8°

Finder Chart

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Finder chart for 22 Scorpii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.79

Class Main-sequence

Absolute magnitude -0.61

Spectral Type B2V

Color Index (B-V) -0.11

Temperature 11744K

The red dot in the diagram below shows where 22 Scorpii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 22 Scorpii. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

22 Scorpii is distant 392.77 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 120.48

Distance (light year) 392.77

Radial Speed 4 km/s

Proper Motion RA -0.008 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Flamsteed designation 22 Scorpii

Henry Draper Catalogue HD148605

SAO Catalogue SAO184429

Hipparcos Catalogue HIP80815

Durchmusterung Catalogue CD-2412695

Visibility from Your Location

Today's 22 Scorpii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 115.2° RISE 21:46

Max altitude: 13.4° TRANSIT 1:24

Azimuth: 244.8° SET 4:58

Set Location

Other stars in Scorpius