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2. Orion (constellation) - Wikipedia

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

   Orion's Belt or The Belt of Orion is an asterism within the constellation. It consists of the three bright stars Zeta (Alnitak), Epsilon (Alnilam), and Delta (Mintaka). Alnitak is around 800 light years away from earth and is 100,000 times more luminous than the Sun and shines with magnitude 1.8; much of its radiation is in the ultraviolet ...

3. 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.

4. Orion's Sword - Wikipedia

   en.wikipedia.org/wiki/Orion's_Sword

   Orion's Sword is a compact asterism in the constellation Orion. It comprises three stars ( 42 Orionis , Theta Orionis , and Iota Orionis ) and M42, the Orion Nebula , which together are thought to resemble a sword or its scabbard .

5. NGC 1981 - Wikipedia

   en.wikipedia.org/wiki/NGC_1981

   NGC 1981 (also known as OCL 525) is an open cluster which is located in the constellation Orion. It was discovered by John Herschel on 4 January 1827. Its apparent magnitude is 4.2 [3] and its size is 28.00 arc minutes. It lies to the north of the Orion Nebula, separated from it by the Sh2-279 region containing NGC 1973, 1975, and 1977.

6. NGC 1980 - Wikipedia

   en.wikipedia.org/wiki/NGC_1980

   NGC 1980 (also known as OCL 529, Collinder 72 and The Lost Jewel of Orion [6]) is a young open cluster associated with an emission nebula in the constellation Orion. It was discovered by William Herschel on 31 January 1786. [ 7 ]

7. List of stars in Orion - Wikipedia

   en.wikipedia.org/wiki/List_of_stars_in_Orion

   Orion variable; well-studied protostar 2MASS J05352184-0546085: V2384: 05 h 35 m 21.84 s: −05° 46′ 08.6″ M7: eclipsing binary brown dwarf OMC-2 FIR 4: V2457: 05 h 35 m 26.97 s: −05° 09′ 54.5″ M7: has a circumstellar disk; Orion variable Orion Source I: 05 h 35 m 14.51 s: −05° 22′ 30.4″ protostellar binary Reipurth 50: 05 h ...