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  2. Betelgeuse - Wikipedia

    en.wikipedia.org/wiki/Betelgeuse

    Its Bayer designation is α Orionis, Latinised to Alpha Orionis and abbreviated Alpha Ori or α Ori. [ 19 ] With a radius between 640 and 764 times that of the Sun, [ 14 ] [ 11 ] if it were at the center of our Solar System , its surface would lie beyond the asteroid belt and it would engulf the orbits of Mercury , Venus , Earth , and Mars .

  3. Orion (constellation) - Wikipedia

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

    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. Saiph is designated Kappa Orionis by Bayer, and serves as Orion's right foot. It is of a similar distance and size ...

  4. Bellatrix - Wikipedia

    en.wikipedia.org/wiki/Bellatrix

    Bellatrix is the third-brightest star in the constellation of Orion, positioned 5° west of the red supergiant Betelgeuse (Alpha Orionis). It has the Bayer designation γ Orionis, which is Latinized to Gamma Orionis. With a slightly variable magnitude of around 1.6, it is typically the 25th-brightest star in the night sky.

  5. Sh 2-264 - Wikipedia

    en.wikipedia.org/wiki/Sh_2-264

    Betelgeuse and Bellatrix are south-east and south-west of the formation, forever cast as Alpha and Gamma by Bayer, they are near the top of Orion and in myth represent the hunter's shoulders. Sharpless 264 , also known as the Lambda Orionis Ring , is a molecular cloud and H II region , which can be seen in the northern region of the Orion ...

  6. Bayer designation - Wikipedia

    en.wikipedia.org/wiki/Bayer_designation

    Detail of Bayer's chart for Orion showing the belt stars and Orion Nebula region, with both Greek and Latin letter labels visible. A Bayer designation is a stellar designation in which a specific star is identified by a Greek or Latin letter followed by the genitive form of its parent constellation's Latin name.

  7. List of stars with resolved images - Wikipedia

    en.wikipedia.org/wiki/List_of_stars_with...

    The following is a list of stars with resolved images, that is, stars whose images have been resolved beyond a point source. Aside from the Sun, observed from Earth, stars are exceedingly small in apparent size, requiring the use of special high-resolution equipment and techniques to image.

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    mail.aol.com

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  9. O-type main-sequence star - Wikipedia

    en.wikipedia.org/wiki/O-type_main-sequence_star

    θ 1 Orionis C is the brightest star in the Trapezium cluster in the Orion nebula, an O6 main sequence star with a fainter spectroscopic companion. ζ Ophiuchi is an O9.5 main sequence star, the brightest in the sky at 3rd magnitude. υ Orionis is a main sequence star of spectral type O9.7, although it has sometimes been given the spectral type B0V