Alphard - α Hydrae (alpha Hydrae)
Alphard, also designated as α Hydrae (alpha Hydrae), is a variable and multiple bright giant star in the constellation of Hydra.
Alphard visual magnitude is 1.98, making it the 45th brightest star in the sky. Thanks to its high brightness, Alphard is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Alphard:
Celestial coordinates and finder chart of Alphard
Alphard is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alphard are provided in the following table:
The simplified sky map below shows the position of Alphard in the sky:
Visibility of Alphard from your location
Digitized Sky Survey image of Alphard
The image below is a photograph of Alphard from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Alphard is -0.014 arcsec per year in Right Ascension and 0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Alphard from the Sun and relative movement
Alphard is distant 177.17 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.
Spectral properties of Alphard
Alphard belongs to spectral class K3 and has a luminosity class of II corresponding to a bright giant star.
The red dot in the diagram below shows where Alphard is situated in the Hertzsprung–Russell diagram.
Alphard star system properties
Alphard 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 Alphard double sysyem: