27 Hydrae

Above the horizon. Rise: 12:42 | Tran: 17:51 | Set: 23:00

Alt: 22.47° Az: 144.23° Direction: South-East

27 Hydrae is a multiple giant star of spectral class G8 in the constellation of Hydra.

27 Hydrae visual magnitude is 4.8. Because of its moderate brightness, 27 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 27 Hydrae. The red arrow shows the motion of 27 Hydrae during the next 10000 years (-2.33 arcmin in Right Ascension and -4.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 21m 43s

Declination -09° 39’ 52”

Hour Angle 21h 47m 07s

Sidereal Time 07h 08m 50s

J2000

Right Ascension 09h 20m 29s

Declination -09° 33’ 20”

Galactic Coordinates

Galactic Longitude 241.08°

Galactic Latitude 27.11°

Finder Chart

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Finder chart for 27 Hydrae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.8

Class Giant

Absolute magnitude 0.43

Spectral Type G8III

Color Index (B-V) 0.93

Temperature 4917K

The red dot in the diagram below shows where 27 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 27 Hydrae. Attribution: Richard Powell / CC BY-SA

Star System Properties

27 Hydrae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 27 Hydrae double sysyem:

Main star magnitude 4.8

Secondary star magnitude 6.7

Magnitude difference 1.9

Separation 231.8 arcsec

Distance, Radial Speed, Proper Motion

27 Hydrae is distant 243.47 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

Distance (parsec) 74.68

Distance (light year) 243.47

Radial Speed 25 km/s

Proper Motion RA -0.014 arcsec/y

Proper Motion Dec -0.029"/y

Alternative Designations

Flamsteed designation 27 Hydrae

Henry Draper Catalogue HD80586

SAO Catalogue SAO136768

Hipparcos Catalogue HIP45811

Durchmusterung Catalogue BD-08 2643

Aitken Double Star Catalogue ADS7311

Visibility from Your Location

Today's 27 Hydrae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.7° RISE 12:42

Max altitude: 28.9° TRANSIT 17:51

Azimuth: 260.3° SET 23:00

Set Location

Other stars in Hydra