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- Psi2 Orionis est un système d'étoiles binaires dans la constellation d'Orion. Elle a une magnitude visuelle apparente de 4,60, indiquant qu'elle est visible à l’œil nu. Basé sur un décalage annuel de parallaxe de 2,87 mas, elle est à environ 1100 années-lumière de la Terre. Psi2 Orionis est une binaire spectroscopique à raies doubles, ce qui signifie que les raies d'absorption des deux composants peuvent être discernées. La paire est en orbite avec une période de 2,526 jours et une faible excentricité de 0,04. L'orbite proche provoque leurs interaction gravitationnelle mutuelle pour déformer les formes des étoiles, transformant ce système en une variable ellipsoïde. L'inclinaison du plan orbital est suffisamment faible pour que les deux étoiles forment un système binaire à éclipses rasant. Pendant l'éclipse de la composante primaire, la magnitude visuelle est réduite de 0,06, tandis que l'éclipse secondaire réduit la magnitude de 0,03. Le spectre combiné de Psi2 Orionis correspond à celui d'une étoile sous-géante de type B avec une classification stellaire de B2 IV. Le composant principal est une étoile de séquence principale de type B avec une classification de B2 V. (fr)
- Psi2 Orionis a binary star system in the equatorial constellation of Orion. It has an apparent visual magnitude of 4.6, indicating that it is visible to the naked eye. Based upon an annual parallax shift of 2.87 mass, it is roughly 1,100 light years distant from the Sun. This is a double-lined spectroscopic binary, which means that the individual absorption lines of both components can be discerned. The pair orbit each other with a period of 2.526 days and a low eccentricity of 0.04. The close orbit is causing their mutual gravitational interaction to distort the shapes of the stars, turning this system into an ellipsoidal variable. The inclination of orbital plane is sufficiently low that the two stars form a grazing eclipsing binary. During the eclipse of the primary component, the visual magnitude is reduced by 0.06, whereas the secondary eclipse reduces the magnitude by 0.03. The brightness variability has led to the star being classified as a pulsating Beta Cephei variable, but no evidence has been found of pulsations superimposed on the variability due to ellipsoidal rotations and eclipses. The combined spectrum of Psi2 Orionis matches that of a B-type subgiant star with a stellar classification of B2 IV. The primary component is an evolved giant star with a class of B1 III, while the secondary is a B-type main sequence star with a classification of B2 V. (en)
- Psi Orionis (ψ Ori / ψ Orionis) è una stella bianco-azzurra nella sequenza principale di magnitudine 4,6 situata nella costellazione di Orione. Dista 1418 anni luce dal sistema solare. (it)
- Psi2 Oriontis (30 Oriontis) é uma estrela na direção da constelação de Orion. Possui uma ascensão reta de 05h 26m 50.23s e uma declinação de +03° 05′ 44.4″. Sua magnitude aparente é igual a 4.59. Considerando sua distância de 1417 anos-luz em relação à Terra, sua magnitude absoluta é igual a −3.60. Pertence à classe espectral B2IV. É uma estrela variável beta Cephei. (pt)
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- Psi Orionis (ψ Ori / ψ Orionis) è una stella bianco-azzurra nella sequenza principale di magnitudine 4,6 situata nella costellazione di Orione. Dista 1418 anni luce dal sistema solare. (it)
- Psi2 Oriontis (30 Oriontis) é uma estrela na direção da constelação de Orion. Possui uma ascensão reta de 05h 26m 50.23s e uma declinação de +03° 05′ 44.4″. Sua magnitude aparente é igual a 4.59. Considerando sua distância de 1417 anos-luz em relação à Terra, sua magnitude absoluta é igual a −3.60. Pertence à classe espectral B2IV. É uma estrela variável beta Cephei. (pt)
- Psi2 Orionis a binary star system in the equatorial constellation of Orion. It has an apparent visual magnitude of 4.6, indicating that it is visible to the naked eye. Based upon an annual parallax shift of 2.87 mass, it is roughly 1,100 light years distant from the Sun. The combined spectrum of Psi2 Orionis matches that of a B-type subgiant star with a stellar classification of B2 IV. The primary component is an evolved giant star with a class of B1 III, while the secondary is a B-type main sequence star with a classification of B2 V. (en)
- Psi2 Orionis est un système d'étoiles binaires dans la constellation d'Orion. Elle a une magnitude visuelle apparente de 4,60, indiquant qu'elle est visible à l’œil nu. Basé sur un décalage annuel de parallaxe de 2,87 mas, elle est à environ 1100 années-lumière de la Terre. Le spectre combiné de Psi2 Orionis correspond à celui d'une étoile sous-géante de type B avec une classification stellaire de B2 IV. Le composant principal est une étoile de séquence principale de type B avec une classification de B2 V. (fr)
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- Psi2 Orionis (fr)
- Psi Orionis (it)
- Psi2 Orionis (en)
- Psi2 Orionis (pt)
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