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  2. Orion (constellation) - Wikipedia

    en.wikipedia.org/wiki/Orion_(constellation)

    Alnilam is losing mass quickly, a consequence of its size. It is the farthest major star in Orion at 1,344 light years. Alnitak, meaning "the girdle", is designated Zeta Orionis, and is the easternmost star in Orion's Belt. It is a triple star system, with the primary star being a hot blue supergiant and the brightest class O star in the night sky.

  3. Rigel - Wikipedia

    en.wikipedia.org/wiki/Rigel

    Rigel is a blue supergiant star in the constellation of Orion. It has the Bayer designation β Orionis, which is Latinized to Beta Orionis and abbreviated Beta Ori or β Ori. Rigel is the brightest and most massive component – and the eponym – of a star system of at least four stars that appear as a single blue-white point of light to the ...

  4. List of stars in Orion - Wikipedia

    en.wikipedia.org/wiki/List_of_stars_in_Orion

    This is the list of notable stars in the constellation Orion, sorted by decreasing brightness. Name B F ... quintuple star system; Algol variable, V max = 7.9 m, V ...

  5. Sigma Orionis - Wikipedia

    en.wikipedia.org/wiki/Sigma_Orionis

    Sigma Orionis or Sigma Ori (σ Orionis, σ Ori) is a multiple star system in the constellation Orion, consisting of the brightest members of a young open cluster. It is found at the eastern end of the belt, south west of Alnitak and west of the Horsehead Nebula which it partially illuminates. The combined brightness of the component stars is ...

  6. Pi4 Orionis - Wikipedia

    en.wikipedia.org/wiki/Pi4_Orionis

    Pi 4 Orionis (π 4 Ori, π 4 Orionis) is a binary star system in the western part of the Orion constellation. It is visible to the naked eye with an apparent visual magnitude of 3.7. [2] Based upon an annual parallax shift of 3.1 mass, [1] it is located roughly 1,050 light-years from the Sun.

  7. Alnitak - Wikipedia

    en.wikipedia.org/wiki/Alnitak

    The system is located at a distance of several hundred parsecs from the Sun and is one of the three main stars of Orion's Belt along with Alnilam and Mintaka. The primary star, Alnitak Aa, is a hot blue supergiant with an absolute magnitude of −6.0 and is the brightest class O star in the night sky with a visual magnitude of +2.0. It has two ...

  8. V380 Orionis - Wikipedia

    en.wikipedia.org/wiki/V380_Orionis

    V380 Ori is a young multiple star system located near the Orion Nebula in the constellation Orion, thought to be somewhere between 1 and 3 million years old. It lies at the centre of NGC 1999 and is the primary source lighting up this and other nebulae in the region.

  9. Iota Orionis - Wikipedia

    en.wikipedia.org/wiki/Iota_Orionis

    Iota Orionis (ι Orionis, abbreviated ι Ori) is a multiple star system in the equatorial constellation of Orion the hunter. It is the eighth-brightest member of Orion with an apparent visual magnitude of 2.77 and also the brightest member of the asterism known as Orion's Sword. It is a member of the NGC 1980 open cluster.

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