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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:41 
Transit: 12:53 
Sunset: 19:05
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All Constellations » Hydra » 

Alphard - α Hydrae (alpha Hydrae)

Above the horizon.  Rise: 5:23 | Tran: 10:37 | Set: 15:51
Alt: 22.69°   Az: 142.23°   Direction: South-East

Alphard, also designated as α Hydrae (alpha Hydrae), is a variable and multiple bright giant star of spectral class K3 in the constellation of Hydra.

Alphard visual magnitude is 1.98, making it the 45th brightest star in the sky. Because of its brightness, Alphard 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.

Image of Alphard - α Hydrae (alpha Hydrae) star
DSS2 image of Alphard. The red arrow shows the motion of Alphard during the next 10000 years (-2.33 arcmin in Right Ascension and 5.50 arcmin in declination);

Celestial Coordinates

Apparent

09h 28m 48s
-08° 46’ 01”
21h 40m 30s
07h 09m 18s

J2000

09h 27m 35s
-08° 39’ 30”

Galactic Coordinates

241.49°
29.05°

Finder Chart

Finder chart Alphard - α Hydrae (alpha Hydrae) star
Simplified finder chart for Alphard - α Hydrae (alpha Hydrae).

Magnitude, Color, Spectral Class

1.98
Bright giant

-1.70
K3II
3886K

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

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

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:

1.98
9.48
7.5
283.1 arcsec

Distance, Radial Speed, Proper Motion

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.

54.35
177.17
-4 km/s
-0.014 arcsec/y
0.033"/y

Alternative Designations

Alphard
α Hydrae
(alpha Hydrae)
SAO136871
SAO136871

Visibility from Your Location

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

Azimuth: 98.8°
Max altitude: 29.8°
Azimuth: 261.2°