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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
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All Constellations » Hydrus » 

μ Hydri (mu Hydri)

Altitude: -41.1°   Azimuth: 184.8°   Direction: South

μ Hydri is a giant star in the constellation of Hydrus.

μ Hydri visual magnitude is 5.28. Because of its reltive faintness, μ Hydri should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of μ Hydri is 0.121 arcsec per year in Right Ascension and -0.056 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of μ Hydri (mu Hydri) star
DSS2 image of μ Hydri. The red arrow shows the motion of μ Hydri during the next 1000 years (2.02 arcmin in Right Ascension and -0.93 arcmin in declination);

Key facts about μ Hydri


μ Hydri (mu Hydri) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -41.1°
Azimuth: 184.8°
Direction: South

Celestial coordinates and finder chart of μ Hydri

μ Hydri is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of μ Hydri are provided in the following table:

02h 31m 40s
-79° 06’ 33”

The simplified sky map below shows the position of μ Hydri in the sky:

Finder chart μ Hydri (mu Hydri) star
Simplified finder chart for μ Hydri (mu Hydri).

Visibility of μ Hydri from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

μ Hydri (mu Hydri) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of μ Hydri from the Sun and relative movement

μ Hydri is distant 291.59 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

89.45 pc
291.59 ly
-15 km/s
0.121 arcsec/year
-0.056 arcsec/year

Spectral properties of μ Hydri

μ Hydri belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where μ Hydri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of μ Hydri. Attribution: Richard Powell / CC BY-SA

Alternative designations of μ Hydri

μ Hydri
(mu Hydri)