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- Alpha_Hydri abstract "Alpha Hydri (α Hyi, α Hydri) is the second brightest star in the southern circumpolar constellation of Hydrus. It is readily visible to the naked eye with an apparent visual magnitude of +2.9. It is sometimes informally known as the Head of Hydrus. This should not be confused with Alpha Hydrae (Alphard) in the constellation Hydra. Alpha Hydri is one of only three stars in the constellation Hydrus that are above the fourth visual magnitude. This star can be readily located as it lies to the south and west of the prominent star Achernar in the constellation Eridanus.Based upon parallax measurements from the Hipparcos mission, Alpha Hydri is located at a distance of about 71.8 light-years (22.0 parsecs) from Earth. This subgiant star is 80% larger and twice as massive as the Sun, with a stellar classification of F0 IV. It is about 810 million years old and is radiating 32 times the Sun's luminosity from its outer atmosphere at an effective temperature of 7,077 K. Alpha Hydri emits X-rays similar to Altair. The space velocity components of this star are [U, V, W] = [−14, −14, -2] km/s.".
- Alpha_Hydri thumbnail Hydrus_IAU.svg?width=300.
- Alpha_Hydri wikiPageID "3113432".
- Alpha_Hydri wikiPageRevisionID "603290041".
- Alpha_Hydri absmagV "1.153".
- Alpha_Hydri ageGyr "0.81".
- Alpha_Hydri appmagV "+2.90".
- Alpha_Hydri bV "+0.290".
- Alpha_Hydri class "F0 IV".
- Alpha_Hydri constell Hydrus.
- Alpha_Hydri epoch Epoch_(astronomy).
- Alpha_Hydri gravity "3.73".
- Alpha_Hydri hasPhotoCollection Alpha_Hydri.
- Alpha_Hydri luminosity "32".
- Alpha_Hydri mass "2".
- Alpha_Hydri metalFe "0.11".
- Alpha_Hydri pError "0.44".
- Alpha_Hydri parallax "45.43".
- Alpha_Hydri propMoDec "+26.77".
- Alpha_Hydri propMoRa "+263.66".
- Alpha_Hydri radialV "+7".
- Alpha_Hydri radius "1.8".
- Alpha_Hydri rotationalVelocity "118".
- Alpha_Hydri temperature "7077".
- Alpha_Hydri uB "+0.189".
- Alpha_Hydri subject Category:Bayer_objects.
- Alpha_Hydri subject Category:F-type_main-sequence_stars.
- Alpha_Hydri subject Category:Hydrus_(constellation).
- Alpha_Hydri subject Category:Objects_within_100_ly_of_Earth.
- Alpha_Hydri subject Category:Stars_with_proper_names.
- Alpha_Hydri type BayerObjects.
- Alpha_Hydri type CelestialBody109239740.
- Alpha_Hydri type F-typeMainSequenceStars.
- Alpha_Hydri type NaturalObject100019128.
- Alpha_Hydri type Object100002684.
- Alpha_Hydri type PhysicalEntity100001930.
- Alpha_Hydri type Star109444100.
- Alpha_Hydri type StarsWithProperNames.
- Alpha_Hydri type Whole100003553.
- Alpha_Hydri type CelestialBody.
- Alpha_Hydri type Star.
- Alpha_Hydri type PhysicalBody.
- Alpha_Hydri comment "Alpha Hydri (α Hyi, α Hydri) is the second brightest star in the southern circumpolar constellation of Hydrus. It is readily visible to the naked eye with an apparent visual magnitude of +2.9. It is sometimes informally known as the Head of Hydrus. This should not be confused with Alpha Hydrae (Alphard) in the constellation Hydra. Alpha Hydri is one of only three stars in the constellation Hydrus that are above the fourth visual magnitude.".
- Alpha_Hydri label "Alfa Hydri".
- Alpha_Hydri label "Alfa Hydri".
- Alpha_Hydri label "Alfa Hydri".
- Alpha_Hydri label "Alpha Hydri".
- Alpha_Hydri label "Alpha Hydri".
- Alpha_Hydri label "Alpha Hydri".
- Alpha_Hydri label "Alpha Hydri".
- Alpha_Hydri label "Alpha Hydri".
- Alpha_Hydri label "Альфа Южной Гидры".
- Alpha_Hydri label "みずへび座アルファ星".
- Alpha_Hydri label "蛇首一".
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri sameAs Alfa_Hydri.
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri sameAs Alfa_Hydri.
- Alpha_Hydri sameAs みずへび座アルファ星.
- Alpha_Hydri sameAs 물뱀자리_알파.
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri sameAs Alfa_Hydri.
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri sameAs m.08s7kp.
- Alpha_Hydri sameAs Q1193838.
- Alpha_Hydri sameAs Q1193838.
- Alpha_Hydri sameAs Alpha_Hydri.
- Alpha_Hydri wasDerivedFrom Alpha_Hydri?oldid=603290041.
- Alpha_Hydri depiction Hydrus_IAU.svg.
- Alpha_Hydri isPrimaryTopicOf Alpha_Hydri.
- Alpha_Hydri name "Alpha Hydri".