51 Hydrae

Below the horizon. Rise: 20:08 | Tran: 23:21 | Set: 2:37

Alt: -66.32° Az: 354.75° Direction: North

51 Hydrae is a variable giant star of spectral class K4 in the constellation of Hydra.

51 Hydrae visual magnitude is 4.77. Because of its moderate brightness, 51 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 51 Hydrae. The red arrow shows the motion of 51 Hydrae during the next 1000 years (-3.22 arcmin in Right Ascension and -1.87 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 24m 34s

Declination -27° 52’ 05”

Hour Angle 11h 50m 28s

Sidereal Time 02h 15m 03s

J2000

Right Ascension 14h 23m 05s

Declination -27° 45’ 14”

Galactic Coordinates

Galactic Longitude 326.6°

Galactic Latitude 30.87°

Finder Chart

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Finder chart for 51 Hydrae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.77

Class Giant

Absolute magnitude 1.13

Spectral Type K4III

Color Index (B-V) 1.31

Temperature 4104K

The red dot in the diagram below shows where 51 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 51 Hydrae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

51 Hydrae is distant 174.61 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

Distance (parsec) 53.56

Distance (light year) 174.61

Radial Speed 20 km/s

Proper Motion RA -0.193 arcsec/y

Proper Motion Dec -0.112"/y

Alternative Designations

Flamsteed designation 51 Hydrae

Henry Draper Catalogue HD125932

SAO Catalogue SAO182483

Hipparcos Catalogue HIP70306

Durchmusterung Catalogue CD-27 9803

General Catalogue of Variable Stars 6648

Visibility from Your Location

Today's 51 Hydrae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.9° RISE 20:08

Max altitude: 10.7° TRANSIT 23:21

Azimuth: 242.1° SET 2:37

Set Location

Other stars in Hydra