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Pi 2 Orionis (π 2 Ori, π 2 Orionis) is the Bayer designation for a solitary star in the equatorial constellation of Orion. Although the Bright Star Catalogue lists this as a spectroscopic binary star system, [10] this does not appear to be the case. [11] It is visible to the naked eye with an apparent visual magnitude of 4.35. [2]
11 Orionis is a solitary [10] Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent visual magnitude of 4.65, [ 7 ] and it is located approximately 365 light years away from the Sun based on parallax. [ 1 ]
The three stars of θ 2 Orionis within the Orion Nebula. θ 2 Orionis consists of three stars in a line, each about an arc-minute from the next. In addition to the well-known three stars, the Washington Double Star Catalog confusingly lists a component D which is actually θ 1 Orionis C. [16] There is one other star brighter than 10th magnitude ...
This is a spectroscopic binary star system with an orbital period of 45.1 days and an eccentricity of 0.26. [5] The primary component is a B-type subgiant star with a stellar classification of B3 IV. [3] With an estimated age of just 32 million years, [3] it has a relatively high rate of spin, showing a projected rotational velocity of 160 km/s ...
Pi 3 Orionis (π 3 Orionis, abbreviated Pi 3 Ori, π 3 Ori), also named Tabit / ˈ t eɪ b ɪ t /, [10] [11] is a star in the equatorial constellation of Orion.At an apparent visual magnitude of 3.16, [2] it is readily visible to the naked eye and is the brightest star in the lion's hide (or shield) that Orion is holding.
The two closest stars, Aa and Ab, are separated by only about a tenth of an astronomical unit and orbit in just under eight days. [6] The system lies within the Orion OB1 association, a group of massive stars that includes most of the bright stars of Orion. [10] It is assigned to the oldest and closest part of the association, known as OB1a. [11]
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Pi Orionis (π Ori, π Orionis) is a group of fairly widely scattered stars in the constellation Orion that constitute the asterism Orion's Shield or Orion's Bow. [1]They form an exception to the general rule that stars that share the same Bayer designation are close together: π 1 is nearly 9° north of π 6 (Tau Eridani is an even more noteworthy example of this).