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- Iota_Orionis abstract "Iota Orionis (ι Ori, ι Orionis) is a star in the equatorial constellation of Orion the hunter. The apparent visual magnitude of Iota Orionis is 2.77, making it the eighth brightest member of Orion. It is the brightest star in an asterism known as Orion's sword. Iota Orionis has the traditional names Hatsya or Hatysa and in Arabic, Na’ir al Saif, which means simply "the Bright One of the Sword." From parallax measurements, it is located at a distance of roughly 1,330 light-years (410 parsecs) from Earth.Iota Orionis is a quadruple system dominated by a massive spectroscopic binary with an eccentric (e=0.764), 29-day orbit. The binary is composed of a stellar class O9 III star (blue giant) and a class B0.8 III/IV star, with the secondary being about 2 magnitudes fainter. The collision of the stellar winds from this pair makes the system a strong X-ray source. Oddly, the two objects of this system appear to have different ages, with the secondary being about double the age of the primary. In combination with the high eccentricity of their orbit, this suggests that the binary system was created through a capture, rather than by being formed together and undergoing a mass transfer. This capture may have occurred, for example, through an encounter between two binary systems.".
- Iota_Orionis thumbnail Hatsya.png?width=300.
- Iota_Orionis wikiPageExternalLink nairalsaif.html.
- Iota_Orionis wikiPageExternalLink Iota_Orionis.html.
- Iota_Orionis wikiPageID "920344".
- Iota_Orionis wikiPageRevisionID "596239383".
- Iota_Orionis ageMyr "4".
- Iota_Orionis ageMyr "9.4".
- Iota_Orionis appmagV "2.77".
- Iota_Orionis bV "–0.24".
- Iota_Orionis component "ι Ori A".
- Iota_Orionis component "ι Ori B".
- Iota_Orionis constell Orion_(constellation).
- Iota_Orionis eccentricity "0.764".
- Iota_Orionis epoch "J2000".
- Iota_Orionis gravity "3.73".
- Iota_Orionis gravity "3.78".
- Iota_Orionis hasPhotoCollection Iota_Orionis.
- Iota_Orionis metalFe "+0.10".
- Iota_Orionis pError "0.22".
- Iota_Orionis parallax "1.4".
- Iota_Orionis periastron "2450072.8".
- Iota_Orionis periodUnitless "2517160.3200000003".
- Iota_Orionis propMoDec "–0.46".
- Iota_Orionis propMoRa "+1.42".
- Iota_Orionis radialV "21.5".
- Iota_Orionis rotationalVelocity "122".
- Iota_Orionis temperature "27000".
- Iota_Orionis temperature "32500".
- Iota_Orionis uB "–1.08".
- Iota_Orionis subject Category:B-type_giants.
- Iota_Orionis subject Category:Bayer_objects.
- Iota_Orionis subject Category:Multiple_star_systems.
- Iota_Orionis subject Category:O-type_giants.
- Iota_Orionis subject Category:Orion_(constellation).
- Iota_Orionis subject Category:Spectroscopic_binaries.
- Iota_Orionis subject Category:Stars_with_proper_names.
- Iota_Orionis type Animal100015388.
- Iota_Orionis type B-typeGiants.
- Iota_Orionis type BayerObjects.
- Iota_Orionis type BinaryStar109221070.
- Iota_Orionis type CelestialBody109239740.
- Iota_Orionis type Giant101323781.
- Iota_Orionis type LivingThing100004258.
- Iota_Orionis type NaturalObject100019128.
- Iota_Orionis type O-typeGiants.
- Iota_Orionis type Object100002684.
- Iota_Orionis type Organism100004475.
- Iota_Orionis type PhysicalEntity100001930.
- Iota_Orionis type SpectroscopicBinaries.
- Iota_Orionis type Star109444100.
- Iota_Orionis type StarsWithProperNames.
- Iota_Orionis type Whole100003553.
- Iota_Orionis type CelestialBody.
- Iota_Orionis type Star.
- Iota_Orionis type PhysicalBody.
- Iota_Orionis comment "Iota Orionis (ι Ori, ι Orionis) is a star in the equatorial constellation of Orion the hunter. The apparent visual magnitude of Iota Orionis is 2.77, making it the eighth brightest member of Orion. It is the brightest star in an asterism known as Orion's sword.".
- Iota_Orionis label "Hatysa".
- Iota_Orionis label "Hatysa".
- Iota_Orionis label "Hatysa".
- Iota_Orionis label "Iota Orionis".
- Iota_Orionis label "Iota Orionis".
- Iota_Orionis label "Iota Orionis".
- Iota_Orionis label "Iota Orionis".
- Iota_Orionis label "Nair al Saif".
- Iota_Orionis label "Наир Аль Саиф".
- Iota_Orionis label "オリオン座イオタ星".
- Iota_Orionis label "伐三".
- Iota_Orionis sameAs Iota_Orionis.
- Iota_Orionis sameAs Hatysa.
- Iota_Orionis sameAs Iota_Orionis.
- Iota_Orionis sameAs Iota_Orionis.
- Iota_Orionis sameAs Iota_Orionis.
- Iota_Orionis sameAs オリオン座イオタ星.
- Iota_Orionis sameAs 하트샤.
- Iota_Orionis sameAs Nair_al_Saif.
- Iota_Orionis sameAs Hatysa.
- Iota_Orionis sameAs Hatysa.
- Iota_Orionis sameAs m.03p_tn.
- Iota_Orionis sameAs Q14029.
- Iota_Orionis sameAs Q14029.
- Iota_Orionis sameAs Iota_Orionis.
- Iota_Orionis wasDerivedFrom Iota_Orionis?oldid=596239383.
- Iota_Orionis depiction Hatsya.png.
- Iota_Orionis isPrimaryTopicOf Iota_Orionis.
- Iota_Orionis name "Iota Orionis A/B".