12 Hydrae

Below the horizon. Rise: 13:05 | Tran: 17:53 | Set: 22:40

Alt: -51.95° Az: 352.17° Direction: North

12 Hydrae is a double giant star of spectral class G8 in the constellation of Hydra.

12 Hydrae visual magnitude is 4.32. Because of its moderate brightness, 12 Hydrae 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 12 Hydrae. The red arrow shows the motion of 12 Hydrae during the next 10000 years (2.67 arcmin in Right Ascension and -1.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 08h 47m 34s

Declination -13° 38’ 30”

Hour Angle 11h 40m 10s

Sidereal Time 20h 27m 45s

J2000

Right Ascension 08h 46m 22s

Declination -13° 32’ 52”

Galactic Coordinates

Galactic Longitude 239.25°

Galactic Latitude 18.01°

Finder Chart

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Finder chart for 12 Hydrae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.32

Class Giant

Absolute magnitude 0.11

Spectral Type G8III

Color Index (B-V) 0.9

Temperature 4996K

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

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

Star System Properties

12 Hydrae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 12 Hydrae double sysyem:

Main star magnitude 4.32

Secondary star magnitude 13.62

Magnitude difference 9.3

Separation 19.9 arcsec

Distance, Radial Speed, Proper Motion

12 Hydrae is distant 226.70 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 69.54

Distance (light year) 226.70

Radial Speed -8 km/s

Proper Motion RA 0.016 arcsec/y

Proper Motion Dec -0.011"/y

Alternative Designations

Flamsteed designation 12 Hydrae

Henry Draper Catalogue HD74918

SAO Catalogue SAO154622

Hipparcos Catalogue HIP43067

Durchmusterung Catalogue BD-13 2673

Visibility from Your Location

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

Azimuth: 103.6° RISE 13:05

Max altitude: 24.9° TRANSIT 17:53

Azimuth: 256.4° SET 22:40

Set Location

Other stars in Hydra