Reprinted and updated by Pilcher, F. Archived from the original on 2012-02-27. Retrieved 2010-07-16. "Naming Stars". Retrieved 13 December 2017. Portals:...

at near-infrared wavelengths. Its Bayer designation is α Orionis, Latinised to Alpha Orionis and abbreviated Alpha Ori or α Ori. With a radius between...

and Pi Orionis), and instead of an arm marked out by Mu Orionis, he holds a club (Chi Orionis). His right leg is represented by Theta Orionis and his...

red supergiant Betelgeuse (Alpha Orionis). It has the Bayer designation γ Orionis, which is Latinized to Gamma Orionis. With a slightly variable magnitude...

Mintaka /ˈmɪntəkə/, designation Delta Orionis (δ Orionis, abbreviated Delta Ori, δ Ori) and 34 Orionis (34 Ori), is a multiple star system some 1,200 light-years...

In stellar evolution, an FU Orionis star (also FU Orionis object, or FUor) is a pre–main-sequence star which displays an extreme change in magnitude and...

Saiph /ˈseɪf/, designation Kappa Orionis (κ Orionis, abbreviated Kappa Ori, κ Ori) and 53 Orionis (53 Ori), is a blue supergiant star and the sixth-brightest...

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...

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...

asterism consisting of π3 Orionis, ο1 Orionis, ο2 Orionis, 6 Orionis, π1 Orionis, π2 Orionis, π4 Orionis, π5 Orionis and π6 Orionis. Consequently, the Chinese...

name FU Orionis is a variable star designation in the Argelander system, which are assigned sequentially as new variables are discovered. FU Orionis is about...

Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis (θ1 Orionis), is a tight open cluster of stars in the heart of the Orion Nebula...

the Lambda Orionis Ring seen by the Spitzer Space Telescope. Young stars are forming in this region. Barnard 35, a part of the Lambda Orionis Ring seen...

by Knobel to be mistakes in transliteration or copy errors. Alnitak (ζ Orionis) is a triple star system at the eastern end of Orion's belt and is 1,260...

V529 Orionis, also known as Nova Orionis 1678, is a variable star which is usually classified as a nova. It was discovered on 28 March 1678 by Johannes...

μ Orionis (Latinised to Mu Orionis, abbreviated to μ Ori or Mu Ori) is a quadruple star system in the constellation Orion, similar to Mizar and Epsilon...

Xi Orionis (ξ Orionis) is a binary star system in the northeastern part of the constellation of Orion, well above the red giant star Betelgeuse in the...

Phi1 Orionis is a binary star system in the constellation Orion, positioned less than a degree to the south of Meissa. It is visible to the naked eye...

split luminosity classes for the O9s. The two MKK O9 V standards were Iota Orionis and 10 Lacertae. The revised Yerkes standards ("MK") presented listed in...

a result of its rapid rotation, Omega Orionis is a Be class star. Among the stars of this class, Omega Orionis was the first where the magnetic field...

GW Orionis is a T Tauri type pre-main sequence hierarchical triple star system. It is associated with the Lambda Orionis star-forming region and has an...

56 Orionis is a single, variable star in the equatorial constellation of Orion. It has an orange hue and is faintly visible to the naked eye with an apparent...

Reprinted and updated by Pilcher, F. Archived from the original on 2012-02-27. Retrieved 2010-07-16. "AAVSO Website". American Association of Variable Star...

Phi2 Orionis is a star in the constellation Orion, where it forms a small triangle on the celestial sphere with the nearby Meissa and Phi1 Orionis. This...

Omicron1 Orionis (ο1 Ori) is a binary star in the northeastern corner of the constellation Orion. It is visible to the naked eye with an apparent visual...

Pi4 Orionis (π4 Ori, π4 Orionis) is a binary star system in the western part of the Orion constellation. It is visible to the naked eye with an apparent...

nebula region is likely excited by the hot young star (YSO) called c Orionis, 42 Orionis or HD 37018 in NGC 1977, which appears as a 4.6 magnitude star some...

Tau Orionis (τ Ori, τ Orionis) is a solitary star in the constellation Orion. If an imaginary line is drawn north-west between the stars Rigel and Mintaka...

star Mintaka in the constellation Orion (genitive Orionis) is also known as Delta Orionis or 34 Orionis. Many languages have a genitive case, including...

Orionis β β Orionis foot (left foot of Orion) 282 -8S 08° 0.12 12 Capella Aurigae α α Aurigae little she-goat 281 46N 46° 0.71 13 Bellatrix Orionis γγ...