12 Scorpii

Above the horizon. Rise: 14:53 | Tran: 18:00 | Set: 21:07

Alt: 9.95° Az: 176.05° Direction: South

12 Scorpii is a variable and double main-sequence star of spectral class B9 in the constellation of Scorpius.

12 Scorpii visual magnitude is 5.67. Because of its faintness, 12 Scorpii 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 12 Scorpii. The red arrow shows the motion of 12 Scorpii during the next 10000 years (-5.33 arcmin in Right Ascension and -7.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 13m 47s

Declination -28° 28’ 45”

Hour Angle 23h 42m 16s

Sideral Time 15h 56m 04s

J2000

Right Ascension 16h 12m 15s

Declination -28° 25’ 03”

Galactic Coordinates

Galactic Longitude 347.75°

Galactic Latitude 16.5°

Finder Chart

Simplified finder chart for 12 Scorpii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.67

Class Main-sequence

Absolute magnitude 0.87

Spectral Type B9V

Color Index (B-V) 0.01

Temperature 10002K

The red dot in the diagram below shows where 12 Scorpii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 12 Scorpii. Attribution: Richard Powell / CC BY-SA

Star System Properties

12 Scorpii 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 12 Scorpii double sysyem:

Main star magnitude 5.67

Secondary star magnitude 7.77

Magnitude difference 2.1

Separation 3.9 arcsec

Distance, Radial Speed, Proper Motion

12 Scorpii is distant 297.99 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 91.41

Distance (light year) 297.99

Radial Speed -3 km/s

Proper Motion RA -0.032 arcsec/y

Proper Motion Dec -0.043"/y

Alternative Designations

Flamsteed designation 12 Scorpii

Henry Draper Catalogue HD145483

SAO Catalogue SAO184217

Hipparcos Catalogue HIP79399

Durchmusterung Catalogue CD-2811962

General Catalogue of Variable Stars 7520

Aitken Double Star Catalogue ADS9953

Visibility from Your Location

Today's 12 Scorpii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 118.5° RISE 14:53

Max altitude: 10.0° TRANSIT 18:00

Azimuth: 241.5° SET 21:07

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

We Need Your Support

Location

Other stars in Scorpius