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Orion Nebula: 20 ly (6.132 pc) [48] Diffuse Nebula: The closest major star formation region to Earth. [49] Crab Nebula: 11 ly (3.4 pc) [50] Supernova remnant: The remnant of a supernova that occurred in 1054 AD. [51] Bubble Nebula: 6 [52]-10 [53] [54] ly (1.84-3.066 pc) Emission nebula: Helix Nebula: 5.74 ly (1.76 pc) [55] Emission nebula ...
The first, in 1991, gave a parallax of 9.8 ± 4.7 mas, yielding a distance of roughly 102 pc or 330 ly. [98] The second was the Hipparcos Input Catalogue (1993) with a trigonometric parallax of 5 ± 4 mas, a distance of 200 pc or 650 ly. [99]