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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

α Hydri (alpha Hydri)

Below the horizon.  Never rises today
Altitude: -23.6°   Azimuth: 187.2°   Direction: South

α Hydri is a hypergiant star of spectral class F0 in the constellation of Hydrus.

α Hydri visual magnitude is 2.86. Because of its brightness, α Hydri is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Celestial coordinates and finder chart of α Hydri

Finder chart α Hydri (alpha Hydri) star
Simplified finder chart for α Hydri (alpha Hydri).

α Hydri is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of α Hydri are provided in the following table:

01h 58m 46s
-61° 34’ 10”
Image of α Hydri (alpha Hydri) star
DSS2 image of α Hydri. The red arrow shows the motion of α Hydri during the next 1000 years (4.40 arcmin in Right Ascension and 0.45 arcmin in declination);

Key facts about α Hydri


and has a luminosity class of V corresponding to a hypergiant star.


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

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

Distance of α Hydri from the Sun and relative movement

α Hydri is distant 71.27 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

21.86 pc
71.27 ly
1 km/s
0.264 arcsec/year
0.027 arcsec/year

Alternative designations of α Hydri

α Hydri
(alpha Hydri)

Visibility of α Hydri from your location

α Hydri (alpha Hydri) is currently not visible from Greenwich, UK